Share widget: Added Yahoo! Mail, Gmail and mailto options (fixes #4742)
Merge pull request #4869 from pjackson28/shareemail

Share widget: Added Yahoo! Mail, Gmail and mailto options (fixes #4742)
[CSS] Updated the font sizes for the headings.
Merge pull request #4870 from thomasgohard/css-headingsizes

[CSS] Updated the font sizes for the headings
Multimedia player: Fixed display of buttons (fixes #4875)
Merge pull request #4876 from pjackson28/fixmultimediatoolbar

Multimedia player: Fixed display of buttons (fixes #4875)
Multimedia player: Improved spacing between buttons and progress bar
Merge pull request #4877 from pjackson28/tweakmmediabuttons

Multimedia player: Improved spacing between buttons and progress bar
Now ignoring keystrokes modifed by the control, alt and meta keys
Merge pull request #4882 from pjackson28/excludemodkeys

Now ignoring keystrokes modifed by the control, alt and meta keys
Mobile panel: Now only expands the secondary menu in the mobile panel by default (fixes #4863)
Merge pull request #4885 from pjackson28/dontexpandsitemenuinformation

Mobile panel: Now only expands the secondary menu in the mobile panel by default (fixes #4863)
WET theme: Added dark blue line between site menu and site footer sections in mobile panel (#4866)
Merge pull request #4886 from pjackson28/adddarklinebetweensitemenuinformation

WET theme: Added dark blue line between site menu and site footer sections in mobile panel (#4866)
Updated files for the v4.0.0-rc1 release
Merge pull request #4887 from pjackson28/releasecandidate

Updated files for the v4.0.0-rc1 release
Fixed validation errors
Updated build version to v4.0.0-development
Documentation: Updated v4.0 changelogs with information about v4.0.0-rc1
Corrected the number of commits in the French v4.0 release notes