clear button icon, refresh comments button and show overview button icons were missing

CHANGELOG

@@ -3,6 +3,8 @@ minerva (15.0.0~alpha.1) stable; urgency=medium
     sessions (#836)
   * Bug fix: structural states of proteins are imported properly from SBGNML PD
     (#995)
+  * Bug fix: clear button icon, refresh comments button and show overview 
+    button icons were missing (regression 15.0.0~alpha.0)
 
 minerva (15.0.0~alpha.0) stable; urgency=medium
   * Improvement: logs provided for validation data model are structurized (#325)

frontend-js/src/main/js/gui/topMenu/TopMenu.js

@@ -95,7 +95,7 @@ TopMenu.prototype._createGui = function () {
   var showOverviewButton = Functions.createElement({
     type: "button",
     className: "minerva-overview-button",
-    content: "<i class='fa fa-sitemap' style='font-size:18px; font-weight:400; padding-right:10px;'></i><span >SHOW OVERVIEW</span>",
+    content: "<i class='fa fa-sitemap' style='font-size:18px; padding-right:10px;'></i><span >SHOW OVERVIEW</span>",
     style: "display:none",
     xss: false
   });
@@ -142,7 +142,7 @@ TopMenu.prototype._createGui = function () {
   var refreshCommentButton = Functions.createElement({
     type: "button",
     className: "minerva-overview-button",
-    content: "<i class='fa fa-refresh' style='font-size:21px; font-weight:400;'></i>",
+    content: "<i class='fa fa-refresh'></i>",
     style: "display:none",
     xss: false
   });
@@ -153,7 +153,7 @@ TopMenu.prototype._createGui = function () {
     type: "button",
     name: "clearButton",
     className: "minerva-overview-button",
-    content: "<i class='fa fa-times' style='font-size:18px; font-weight:300; padding-right:10px;'></i>CLEAR",
+    content: "<i class='fa fa-times' style='padding-right:10px;'></i>CLEAR",
     xss: false
   });
   rightHeaderMenuDiv.appendChild(clearButton);