First pass-through of the en_US locale to change inaccessible language strings.
Finished renaming Video Dock to Webcams
Finished replacing 'camera' with 'webcam
Finished removing the term 'click'
Finished tab names for public chat and options tab
Brought accessible language to Presentation title bar
Added user's name to button tooltips in Users window userlist
Added accessibilityDescription to chat message input box
Added accessibilityDescription to chat message input box
Replaced Shortcut Help datagrid headers with properly localized strings.
changed the join audio string
fixed the shorcut help window column headers
Merge pull request #205 from SenecaCDOT-BigBlueButton/accessible-language

Accessible language