Separate ee content from issues_list.css

issues_list.scss included ee-only styles and
these are separated into an ee-only scss.

app/assets/stylesheets/page_bundles/issues_list.scss

@@ -35,22 +35,6 @@
   }
 }
 
-.issuable-list-root {
-  .gl-label-link {
-    text-decoration: none;
-
-    &:hover {
-      color: inherit;
-    }
-  }
-}
-
-.svg-container.jira-logo-container {
-  svg {
-    vertical-align: text-bottom;
-  }
-}
-
 .user-can-drag {
   cursor: grab;
 }

ee/app/assets/stylesheets/page_bundles/issues_list.scss

+@import '../../../../../app/assets/stylesheets/page_bundles/issues_list';
+
+.issuable-list-root {
+  .gl-label-link {
+    text-decoration: none;
+
+    &:hover {
+      color: inherit;
+    }
+  }
+}
+
+.svg-container.jira-logo-container {
+  svg {
+    vertical-align: text-bottom;
+  }
+}