Fixes in GWT backend:
-added log configuration with GwtApplicationConfiguration.log
-more accurate value of GwtGraphics.getDensity()
-Skin emulation takes NinePatch padding into account (copy-paste from not emulated class)
-fixed filtering of asset files in PreloaderBundleGenerator
Changed theme in gwt backend to chrome theme with "gwt-" prefixed classes only
Improved commentary about theme inheritance
Add HttpParametersUtils to GWT emulation.

Because URLEncoder does not exist in GWT-land, the emulated class uses an
equivalent encode method provided by GWT's URL class.
Merge pull request #288 from kreymerman/gwt_fixes

Couple of small fixes in GWT backend
Fix GwtGraphics.getDensity()

Previous commit changed to a double, which caused a type mismatch with the return type. 
Change HttpParametersUtils emulation.

Instead of emulating HttpParametersUtils, emulate java.net.URLEncoder.
This allows the encoding to be set (amongst the limited options available
in GWT) and provides consistency across backends.
Close writer.
Fire change event in setItems.
Remove obsolete setWidget call.
Detected usage of nested iterator() and throw exception.
Merge remote-tracking branch 'origin/master'
Issue #1353, internal getters and setters.

Getters/setters were used internally for x, y, width, height, scalex, scaley and rotation to facilitate notification when those properties are retrieved or set. Turns out overriding these isn't really very useful, so we decided not to use the getters and setters internally. Other properties that might be useful to override were left alone, such as isVisible, setStage, setParent, etc.

Also, think of all zee performancez gained!
http://youtu.be/Ay9BWM8lwOA
#1357, fixed table getRow();
#1290, native libs with applets.
Another try at fixing applets.
Guard against nested iterator usage by throwing an exception. Issue 1361.
1345, fixed primitive wrapper generic types.
Added time scale action.