Merge branch 'header-overflow-small-devices' into 'master'

Fixed issue with header overflow

Fixes #13492

Before:

![Screen_Shot_2016-02-22_at_15.32.42](/uploads/aefec4e67368d0387f22448be8eea65c/Screen_Shot_2016-02-22_at_15.32.42.png)

After:

![Screen_Shot_2016-02-22_at_15.32.09](/uploads/76b0d96cd5d9a4076c9d0883aaaba003/Screen_Shot_2016-02-22_at_15.32.09.png)

See merge request !2921

app/assets/stylesheets/framework/common.scss

@@ -377,7 +377,6 @@ table {
 }
 
 .project-item-select-holder {
-  display: inline-block;
   position: relative;
 
   .project-item-select {

app/assets/stylesheets/framework/header.scss

@@ -77,6 +77,7 @@ header {
       line-height: $header-height;
       font-weight: normal;
       color: #4c4e54;
+      overflow: hidden;
       text-overflow: ellipsis;
       vertical-align: top;
       white-space: nowrap;