Show where instances are defined (#748)

* Indicate source module of instances

Above instance, we now also display a link to the module where the
instance was defined. This is sometimes helpful in figuring out
what to import.

* Source module for type/data families too

* Remove parens

* Accept tests

1 files changed, 130 insertions, 26 deletions

diff --git a/html-test/ref/Instances.html b/html-test/ref/Instances.html
index fb3ee280..3dc26133 100644
--- a/html-test/ref/Instances.html
+++ b/html-test/ref/Instances.html
@@ -90,7 +90,11 @@
 		  ><details id="i:id:-60--126--126-:Foo:1"
 		    ><summary class="hide-when-js-enabled"
 		      >Instance details</summary
-		      ><div class="subs methods"
+		      ><p
+		      >Defined in <a href="#"
+			>Instances</a
+			></p
+		      > <div class="subs methods"
 		      ><p class="caption"
 			>Methods</p
 			><p class="src"
@@ -188,7 +192,11 @@
 		  ><details id="i:ic:Foo:Foo:1"
 		    ><summary class="hide-when-js-enabled"
 		      >Instance details</summary
-		      ><div class="subs methods"
+		      ><p
+		      >Defined in <a href="#"
+			>Instances</a
+			></p
+		      > <div class="subs methods"
 		      ><p class="caption"
 			>Methods</p
 			><p class="src"
@@ -234,7 +242,11 @@
 		  ><details id="i:ic:Foo:Foo:2"
 		    ><summary class="hide-when-js-enabled"
 		      >Instance details</summary
-		      ><div class="subs methods"
+		      ><p
+		      >Defined in <a href="#"
+			>Instances</a
+			></p
+		      > <div class="subs methods"
 		      ><p class="caption"
 			>Methods</p
 			><p class="src"
@@ -292,7 +304,11 @@
 		  ><details id="i:ic:Foo:Foo:3"
 		    ><summary class="hide-when-js-enabled"
 		      >Instance details</summary
-		      ><div class="subs methods"
+		      ><p
+		      >Defined in <a href="#"
+			>Instances</a
+			></p
+		      > <div class="subs methods"
 		      ><p class="caption"
 			>Methods</p
 			><p class="src"
@@ -354,7 +370,11 @@
 		  ><details id="i:ic:Foo:Foo:4"
 		    ><summary class="hide-when-js-enabled"
 		      >Instance details</summary
-		      ><div class="subs methods"
+		      ><p
+		      >Defined in <a href="#"
+			>Instances</a
+			></p
+		      > <div class="subs methods"
 		      ><p class="caption"
 			>Methods</p
 			><p class="src"
@@ -400,7 +420,11 @@
 		  ><details id="i:ic:Foo:Foo:5"
 		    ><summary class="hide-when-js-enabled"
 		      >Instance details</summary
-		      ><div class="subs methods"
+		      ><p
+		      >Defined in <a href="#"
+			>Instances</a
+			></p
+		      > <div class="subs methods"
 		      ><p class="caption"
 			>Methods</p
 			><p class="src"
@@ -458,7 +482,11 @@
 		  ><details id="i:ic:Foo:Foo:6"
 		    ><summary class="hide-when-js-enabled"
 		      >Instance details</summary
-		      ><div class="subs methods"
+		      ><p
+		      >Defined in <a href="#"
+			>Instances</a
+			></p
+		      > <div class="subs methods"
 		      ><p class="caption"
 			>Methods</p
 			><p class="src"
@@ -504,7 +532,11 @@
 		  ><details id="i:ic:Foo:Foo:7"
 		    ><summary class="hide-when-js-enabled"
 		      >Instance details</summary
-		      ><div class="subs methods"
+		      ><p
+		      >Defined in <a href="#"
+			>Instances</a
+			></p
+		      > <div class="subs methods"
 		      ><p class="caption"
 			>Methods</p
 			><p class="src"
@@ -564,7 +596,11 @@
 		  ><details id="i:ic:Foo:Foo:8"
 		    ><summary class="hide-when-js-enabled"
 		      >Instance details</summary
-		      ><div class="subs methods"
+		      ><p
+		      >Defined in <a href="#"
+			>Instances</a
+			></p
+		      > <div class="subs methods"
 		      ><p class="caption"
 			>Methods</p
 			><p class="src"
@@ -664,7 +700,11 @@
 		  ><details id="i:ic:Bar:Bar:1"
 		    ><summary class="hide-when-js-enabled"
 		      >Instance details</summary
-		      ><div class="subs methods"
+		      ><p
+		      >Defined in <a href="#"
+			>Instances</a
+			></p
+		      > <div class="subs methods"
 		      ><p class="caption"
 			>Methods</p
 			><p class="src"
@@ -762,7 +802,11 @@
 		  ><details id="i:ic:Bar:Bar:2"
 		    ><summary class="hide-when-js-enabled"
 		      >Instance details</summary
-		      ><div class="subs methods"
+		      ><p
+		      >Defined in <a href="#"
+			>Instances</a
+			></p
+		      > <div class="subs methods"
 		      ><p class="caption"
 			>Methods</p
 			><p class="src"
@@ -844,7 +888,11 @@
 		  ><details id="i:ic:Bar:Bar:3"
 		    ><summary class="hide-when-js-enabled"
 		      >Instance details</summary
-		      ><div class="subs methods"
+		      ><p
+		      >Defined in <a href="#"
+			>Instances</a
+			></p
+		      > <div class="subs methods"
 		      ><p class="caption"
 			>Methods</p
 			><p class="src"
@@ -900,7 +948,11 @@
 		  ><details id="i:ic:Bar:Bar:4"
 		    ><summary class="hide-when-js-enabled"
 		      >Instance details</summary
-		      ><div class="subs methods"
+		      ><p
+		      >Defined in <a href="#"
+			>Instances</a
+			></p
+		      > <div class="subs methods"
 		      ><p class="caption"
 			>Methods</p
 			><p class="src"
@@ -988,7 +1040,11 @@
 		  ><details id="i:ic:Bar:Bar:5"
 		    ><summary class="hide-when-js-enabled"
 		      >Instance details</summary
-		      ><div class="subs methods"
+		      ><p
+		      >Defined in <a href="#"
+			>Instances</a
+			></p
+		      > <div class="subs methods"
 		      ><p class="caption"
 			>Methods</p
 			><p class="src"
@@ -1044,7 +1100,11 @@
 		  ><details id="i:ic:Bar:Bar:6"
 		    ><summary class="hide-when-js-enabled"
 		      >Instance details</summary
-		      ><div class="subs methods"
+		      ><p
+		      >Defined in <a href="#"
+			>Instances</a
+			></p
+		      > <div class="subs methods"
 		      ><p class="caption"
 			>Methods</p
 			><p class="src"
@@ -1196,7 +1256,11 @@
 		  ><details id="i:ic:Baz:Baz:1"
 		    ><summary class="hide-when-js-enabled"
 		      >Instance details</summary
-		      ><div class="subs methods"
+		      ><p
+		      >Defined in <a href="#"
+			>Instances</a
+			></p
+		      > <div class="subs methods"
 		      ><p class="caption"
 			>Methods</p
 			><p class="src"
@@ -1254,7 +1318,11 @@
 		  ><details id="i:ic:Baz:Baz:2"
 		    ><summary class="hide-when-js-enabled"
 		      >Instance details</summary
-		      ><div class="subs methods"
+		      ><p
+		      >Defined in <a href="#"
+			>Instances</a
+			></p
+		      > <div class="subs methods"
 		      ><p class="caption"
 			>Methods</p
 			><p class="src"
@@ -1312,7 +1380,11 @@
 		  ><details id="i:ic:Baz:Baz:3"
 		    ><summary class="hide-when-js-enabled"
 		      >Instance details</summary
-		      ><div class="subs methods"
+		      ><p
+		      >Defined in <a href="#"
+			>Instances</a
+			></p
+		      > <div class="subs methods"
 		      ><p class="caption"
 			>Methods</p
 			><p class="src"
@@ -1372,7 +1444,11 @@
 		  ><details id="i:ic:Baz:Baz:4"
 		    ><summary class="hide-when-js-enabled"
 		      >Instance details</summary
-		      ><div class="subs methods"
+		      ><p
+		      >Defined in <a href="#"
+			>Instances</a
+			></p
+		      > <div class="subs methods"
 		      ><p class="caption"
 			>Methods</p
 			><p class="src"
@@ -1442,7 +1518,11 @@
 		  ><details id="i:ic:Baz:Baz:5"
 		    ><summary class="hide-when-js-enabled"
 		      >Instance details</summary
-		      ><div class="subs methods"
+		      ><p
+		      >Defined in <a href="#"
+			>Instances</a
+			></p
+		      > <div class="subs methods"
 		      ><p class="caption"
 			>Methods</p
 			><p class="src"
@@ -1550,7 +1630,11 @@
 		  ><details id="i:id:Quux:Foo:1"
 		    ><summary class="hide-when-js-enabled"
 		      >Instance details</summary
-		      ><div class="subs methods"
+		      ><p
+		      >Defined in <a href="#"
+			>Instances</a
+			></p
+		      > <div class="subs methods"
 		      ><p class="caption"
 			>Methods</p
 			><p class="src"
@@ -1610,7 +1694,11 @@
 		  ><details id="i:id:Quux:Bar:2"
 		    ><summary class="hide-when-js-enabled"
 		      >Instance details</summary
-		      ><div class="subs methods"
+		      ><p
+		      >Defined in <a href="#"
+			>Instances</a
+			></p
+		      > <div class="subs methods"
 		      ><p class="caption"
 			>Methods</p
 			><p class="src"
@@ -1708,7 +1796,11 @@
 		  ><details id="i:id:Quux:Baz:3"
 		    ><summary class="hide-when-js-enabled"
 		      >Instance details</summary
-		      ><div class="subs methods"
+		      ><p
+		      >Defined in <a href="#"
+			>Instances</a
+			></p
+		      > <div class="subs methods"
 		      ><p class="caption"
 			>Methods</p
 			><p class="src"
@@ -1784,7 +1876,11 @@
 		  ><details id="i:id:Quux:Thud:4"
 		    ><summary class="hide-when-js-enabled"
 		      >Instance details</summary
-		      ><div class="src"
+		      ><p
+		      >Defined in <a href="#"
+			>Instances</a
+			></p
+		      > <div class="src"
 		      ><span class="keyword"
 			>data</span
 			> <a href="#" title="Instances"
@@ -1886,7 +1982,11 @@
 		  ><details id="i:ic:Norf:Norf:1"
 		    ><summary class="hide-when-js-enabled"
 		      >Instance details</summary
-		      ><div class="subs associated-types"
+		      ><p
+		      >Defined in <a href="#"
+			>Instances</a
+			></p
+		      > <div class="subs associated-types"
 		      ><p class="caption"
 			>Associated Types</p
 			><p class="src"
@@ -1960,7 +2060,11 @@
 		  ><details id="i:ic:Norf:Norf:2"
 		    ><summary class="hide-when-js-enabled"
 		      >Instance details</summary
-		      ><div class="subs associated-types"
+		      ><p
+		      >Defined in <a href="#"
+			>Instances</a
+			></p
+		      > <div class="subs associated-types"
 		      ><p class="caption"
 			>Associated Types</p
 			><p class="src"