Merge pull request #1038 from Unkn0wn0ne/master

Documentation
Use LWJGL Sync class instead of Thread.sleep for JGLFW.
Add additional key for fullscreen on iOS7

Closes #947.
Merge branch 'origin/master'
Backend only Music methods for setPosition and getDuration.
TextField cleanup
Merge pull request #965 from seroperson/master

TextField cleanup
TextField cleanup.

#965
Minor cleanup.
Fixed for GWT.
Fixed incorrect comparison in MeshBuilder
RoboVM doesn't expose duration, even though OALAudioTrack does.
Merge pull request #1046 from niyaro/master

Bug-fix: incorrect comparison in MeshBuilder
Warning
update build.xml for android 4.4 jarfile
Merge pull request #1048 from jrenner/fix-build

update build.xml for android 4.4 jarfile
Sigh...
Added a flip option to Skin imports from json. This allows the font to be flipped on the y-axis. Default is false.
Default alpha to 1.0 see #1051
Merge pull request #1052 from Magicked/master

Added a flip option to the BitmapFont section of Skin imports from JSON.