Android: Graphics redundancy cleanup
Merge pull request #1 from libgdx/master

Update
Use an enum for specifying play modes for animations.
Added useRealSizeKnobs to ScrollPane, which indicates if knobs are
scaled or real sized by physical width and height of the image
Changed RoboVM version to 0.0.10.
Expand documentation for BitmapFont.
Changed logging to original
Removed Unused variable from AndroidInput
Merge pull request #1517 from Unkn0wn0ne/smallfix

Removed Unused variable from AndroidInput
Changed RoboVM version to 0.0.10.
Merge pull request #1518 from jtakakura/patch-pom1

Changed RoboVM version to 0.0.10.
Fix typos in the documentation
Fix erroneous Javadoc tags.
Adds MinMaxViewport and DoubleRatioViewport
Minor cleanup.
Gets rid of DoubleRatioViewport and adds a snap flag to MinMaxViewport instead
Remove obsolete function checkGLES1Validity from VertexAttributes.
Merge pull request #1506 from lioncash/documentation

Expand documentation some more
Merge branch 'origin/master'

Conflicts:
	gdx/src/com/badlogic/gdx/utils/viewport/DoubleRatioViewport.java
	gdx/src/com/badlogic/gdx/utils/viewport/MinMaxViewport.java
	gdx/src/com/badlogic/gdx/utils/viewport/MinMaxViewportBase.java
Minor cleanup.