Warnings
Fix unwanted visuals on touch up outside of tap area

So, if one taps a button, drags pointer outside of tap area and releases it then unwanted visual feedback will be shown. See: https://www.dropbox.com/s/3r27s21fxnhmyvv/2014-03-31%2010.10.22.mp4
Javadoc
Merge pull request #1598 from alexander-mironov/patch-1

Fix unwanted visuals on touch up outside of tap area
Merge branch 'origin/master'
Fixed scroll to selected item.

closes #1599
Improve performance of the lwjgl backend
update changes
Added resource removal from Skin object
Merge pull request #1606 from cobolfoo/master

Added resource removal from Skin object
Fixed parsing null.

closes #1608
Merge branch 'origin/master'
Merge pull request #1605 from Tom-Ski/meow

Improve empty while loop performance in the lwjgl backend
Remove old test code
Added rows parameter to set preferred height for TextArea
Visual pressed only affects presses shorter than the visual press duration.

#1612
Merge branch 'origin/master'
Merge pull request #1609 from anserran/rowscolumns

More control over preferred size in TextField and TextArea