Bug 911412 - [Buri][fugu][Language][Email]The view the attachment Button...

... is truncated

https://bugzilla.mozilla.org/show_bug.cgi?id=911412

Added view button that is provided from UX and adjusted positions in-line with download icon
Let's keep the data-l10n-id on this element for accessibility reasons. Just set the font-size: 0 for the style for this div, can use the .icon-view style section for it. The other elements should also have accessibility strings, but since this is past string freeze, we will pick those up later.