Multimedia: Implemented closed captions for the youtube player
Multimedia: enabled the progress bar polyfill
Optimized plugin triggers
Merge pull request #3913 from LaurentGoderre/v4-multimedia-progress-polyfill

Multimedia: enabled the progress bar polyfill
Merge pull request #3911 from pjackson28/shortensometriggers

Optimized plugin triggers
Merge pull request #3912 from LaurentGoderre/v4-multimedia-youtube-fix

Multimedia: Implemented closed captions for the youtube player
GRUNT: Corrected font copy path to new TBootstrap file structure
Merge pull request #3916 from masterbee/gruntpatch

GRUNT: Corrected font copy path to the new TBootstrap file structure
Lightbox: Changed lb- and -lb to lbx- and -lbx
Merge pull request #3918 from pjackson28/changewblbtowblbx

Lightbox: Changed lb- and -lb to lbx- and -lbx
Overlay/Archived: Prevented content from overlapping close button (fixes #3603)
Merge pull request #3919 from pjackson28/fixoverlayclosespacing

Overlay/Archived: Prevented content from overlapping close button (fixes #3603)
Removed Bootstrap outline overrides
Merge pull request #3920 from pjackson28/removebootstrapoutlineoverrides

Removed Bootstrap outline overrides
GRUNT: Corrected respond.js src path due to project file change
Merge pull request #3921 from masterbee/respondjsfix

GRUNT: Corrected respond.js src path due to respond.js project file changes
Added hidden content to plugin buttons in addition to the title attributes
Merge pull request #3922 from pjackson28/fixbuttonalttext

Added hidden content to plugin buttons in addition to the title attributes
Overlay: Fixed popup examples (fixes #3926)
Merge pull request #3928 from pjackson28/fixmodaloverlay

Overlay: Fixed popup examples (fixes #3926)