Replace code fold icons with octicons (#12222)

- replace font-awesome icons with octicons
- clean up js and css surrounding the code expansion and file folding
- fix hover color on arc-green
- tweak diff line number colors

Co-authored-by: zeripath <art27@cantab.net>

1 files changed, 17 insertions, 12 deletions

diff --git a/web_src/less/_repository.less b/web_src/less/_repository.less
index ce35049ebc..7bb7d81bab 100644
--- a/web_src/less/_repository.less
+++ b/web_src/less/_repository.less
@@ -1694,6 +1694,11 @@
                 padding: 0 5px !important;
             }
 
+            .tag-code .lines-num,
+            .tag-code td {
+                padding: 0 !important;
+            }
+
             tbody {
                 tr {
                     td.halfwidth {
@@ -1727,17 +1732,21 @@
 
         .code-diff-unified tbody tr {
             &.del-code td {
-                background-color: #ffeef0 !important;
-                border-color: #f1c0c0 !important;
+                background-color: #ffeef0;
+                border-color: #f1c0c0;
             }
 
             &.add-code td {
                 background-color: #e6ffed;
+                border-color: #bef5cb;
+            }
+
+            &.del-code td.lines-num {
+                background-color: #ffe5e4;
             }
 
             &.add-code td.lines-num {
                 background-color: #cdffd8;
-                border-color: #bef5cb;
             }
 
         }
@@ -3001,19 +3010,15 @@ tbody.commit-list {
     margin: 0 !important;
 }
 
+.tag-code {
+    height: 28px;
+}
+
 .tag-code,
 .tag-code td {
-    background-color: #e6f1f6;
+    background-color: #f0f9ff;
     border-color: #f1f8ff !important;
-    padding-top: 8px;
-    padding-bottom: 8px;
     vertical-align: middle;
-    color: rgba(27, 31, 35, .7);
-}
-
-.tag-code td.lines-num {
-    background-color: #f6e6eb !important;
-    border-color: #dbedff;
 }
 
 .issue-keyword {