Merge pull request #2155 from pjackson28/v3.0

Fixed remaining multimedia player height issue in #1816
Merge pull request #2157 from pjackson28/v3.0

Fixed Firefox mega menu middle mouse button issue (#1893)
Merge pull request #2158 from pjackson28/master

Fixed Firefox mega menu middle mouse button issue (#1893)
Added .pub file type to download icon list
Merge pull request #2163 from cfarquharson/v3.0

Added .pub file type to download icon list
Merge pull request #2159 from pjackson28/master

Switched the Web Feeds Twitter support to the Twitter Embedded Timeline to address API issue in #2080
Merge pull request #2160 from pjackson28/v3.0

Switched the Web Feeds Twitter support to the Twitter Embedded Timeline to address API issue in #2080
Fixed the issue with vidoes in separate mobile view tabs (#1861).
Resolved merge conflicts.