Merge pull request #110 from cedricziel/editorConfig

[TASK] Add .editorconfig file
[TASK] Carousel needs to have background-image and background-color at the same time available
[TASK] Deprecate backend skin for CMS7 and provide new logos
[TASK] Make getCompiledFile a static method - fixes #103 #104

TYPO3 sets the deprecation strategy to the strictest possible when in Development mode.
That includes hard Exceptions on PHP 5.6.

This patch makes the method static which shouldnt harm anyone.
[TASK] Reformat all project-specific content to TYPO3.CMS CGL

The reason in doing so is just to be able to use automatic formatting in the IDE.

Review with care!
Relies softly on #110 which should be merged first.