scope new icons from icon font to top and project menu

otherwise we have some icons twice as long as we still use the old icons in the content area

app/assets/stylesheets/fonts/openproject_icon_font.css.sass

@@ -59,234 +59,236 @@
   content: attr(data-icon3)
   padding: 0px 8px 0px 0px
 
-[class^="icon-"]:before,
+#top-menu, #main-menu
-[class*=" icon-"]:before
+  [class^="icon-"]:before,
+  [class*=" icon-"]:before
     @include data-icon
 
-.icon-arrow-1-down:before
+#top-menu, #main-menu
+  .icon-arrow-1-down:before
     content: "a"
 
-.icon-edit-pen-1:before
+  .icon-edit-pen-1:before
     content: "b"
 
-.icon-copy:before
+  .icon-copy:before
     content: "c"
 
-.icon-add:before
+  .icon-add:before
     content: "d"
 
-.icon-content-14:before
+  .icon-content-14:before
     content: "e"
 
-.icon-time:before
+  .icon-time:before
     content: "f"
 
-.icon-unit:before
+  .icon-unit:before
     content: "g"
 
-.icon-refresh-reload-1:before
+  .icon-refresh-reload-1:before
     content: "h"
 
-.icon-lock-secure-1:before
+  .icon-lock-secure-1:before
     content: "i"
 
-.icon-unlock:before
+  .icon-unlock:before
     content: "j"
 
-.icon-check-1:before
+  .icon-check-1:before
     content: "k"
 
-.icon-quote:before
+  .icon-quote:before
     content: "l"
 
-.icon-letter-mail-1:before
+  .icon-letter-mail-1:before
     content: "m"
 
-.icon-duplicate:before
+  .icon-duplicate:before
     content: "n"
 
-.icon-open-folder:before
+  .icon-open-folder:before
     content: "o"
 
-.icon-filled-folder-1:before
+  .icon-filled-folder-1:before
     content: "p"
 
-.icon-text-document:before
+  .icon-text-document:before
     content: "q"
 
-.icon-compressed-zip-file:before
+  .icon-compressed-zip-file:before
     content: "r"
 
-.icon-document-file-1:before
+  .icon-document-file-1:before
     content: "s"
 
-.icon-image-photo-file-1:before
+  .icon-image-photo-file-1:before
     content: "t"
 
-.icon-movie-play-file-1:before
+  .icon-movie-play-file-1:before
     content: "u"
 
-.icon-music-file-1:before
+  .icon-music-file-1:before
     content: "v"
 
-.icon-stats:before
+  .icon-stats:before
     content: "w"
 
-.icon-move:before
+  .icon-move:before
     content: "x"
 
-.icon-priority:before
+  .icon-priority:before
     content: "y"
 
-.icon-tracker:before
+  .icon-tracker:before
     content: "z"
 
-.icon-status:before
+  .icon-status:before
     content: "A"
 
-.icon-male-user-1:before
+  .icon-male-user-1:before
     content: "B"
 
-.icon-budget:before
+  .icon-budget:before
     content: "C"
 
-.icon-cancel:before
+  .icon-cancel:before
     content: "D"
 
-.icon-feed-rss-2:before
+  .icon-feed-rss-2:before
     content: "E"
 
-.icon-delete-trash-1:before
+  .icon-delete-trash-1:before
     content: "F"
 
-.icon-eye-view-1:before
+  .icon-eye-view-1:before
     content: "G"
 
-.icon-not-watch:before
+  .icon-not-watch:before
     content: "H"
 
-.icon-close:before
+  .icon-close:before
     content: "I"
 
-.icon-disc-floppy-font:before
+  .icon-disc-floppy-font:before
     content: "J"
 
-.icon-calendar:before
+  .icon-calendar:before
     content: "K"
 
-.icon-help:before
+  .icon-help:before
     content: "L"
 
-.icon-version:before
+  .icon-version:before
     content: "M"
 
-.icon-added:before
+  .icon-added:before
     content: "N"
 
-.icon-arrow-left-right:before
+  .icon-arrow-left-right:before
     content: "O"
 
-.icon-arrow-left-right:before
+  .icon-arrow-left-right:before
     content: "O"
 
-.icon-minus-zoom:before
+  .icon-minus-zoom:before
     content: "P"
 
-.icon-minus-zoom:before
+  .icon-minus-zoom:before
     content: "P"
 
-.icon-plus-zoom:before
+  .icon-plus-zoom:before
     content: "Q"
 
-.icon-outline:before
+  .icon-outline:before
     content: "R"
 
-.icon-rename:before
+  .icon-rename:before
     content: "S"
 
-.icon-gears-setting:before
+  .icon-gears-setting:before
     content: "T"
 
-.icon-ticket:before
+  .icon-ticket:before
     content: "U"
 
-.icon-ticket-edit:before
+  .icon-ticket-edit:before
     content: "V"
 
-.icon-ticket-checked:before
+  .icon-ticket-checked:before
     content: "W"
 
-.icon-ticket-note:before
+  .icon-ticket-note:before
     content: "X"
 
-.icon-wiki-edit:before
+  .icon-wiki-edit:before
     content: "Y"
 
-.icon-cup-2:before
+  .icon-cup-2:before
     content: "Z"
 
-.icon-new-planning-element:before
+  .icon-new-planning-element:before
     content: "0"
 
-.icon-changeset:before
+  .icon-changeset:before
     content: "1"
 
-.icon-news:before
+  .icon-news:before
     content: "2"
 
-.icon-projects:before
+  .icon-projects:before
     content: "3"
 
-.icon-link:before
+  .icon-link:before
     content: "4"
 
-.icon-bookmark-star-favorite:before
+  .icon-bookmark-star-favorite:before
     content: "5"
 
-.icon-excel:before
+  .icon-excel:before
     content: "6"
 
-.icon-content-44:before
+  .icon-content-44:before
     content: "7"
 
-.icon-publish:before
+  .icon-publish:before
     content: "8"
 
-.icon-double-arrow-left:before
+  .icon-double-arrow-left:before
     content: "9"
 
-.icon-double-arrow-right:before
+  .icon-double-arrow-right:before
     content: "!"
 
-.icon-warning:before
+  .icon-warning:before
     content: "#"
 
-.icon-warning:before
+  .icon-warning:before
     content: "#"
 
-.icon-chart-graph-file-1:before
+  .icon-chart-graph-file-1:before
     content: "$"
 
-.icon-lightbulb-shine:before
+  .icon-lightbulb-shine:before
     content: "%"
 
-.icon-group:before
+  .icon-group:before
     content: "&"
 
-.icon-gift:before
+  .icon-gift:before
     content: "'"
 
-.icon-home-1:before
+  .icon-home-1:before
     content: "("
 
-.icon-clip-paper-1:before
+  .icon-clip-paper-1:before
     content: ")"
 
-.icon-issue-assignedtome:before
+  .icon-issue-assignedtome:before
     content: "*"
 
-.icon-issue-reportedbyme:before
+  .icon-issue-reportedbyme:before
     content: "+"
 
-.icon-issue-watched:before
+  .icon-issue-watched:before
     content: ","