[BUG #7008] renamed for better understanding

- 'excludeNoDeps' => 'excludeWithDepsHard'
[BUG #7013] document '=' prefix in 'exclude' config key
minor comment formatting fix
minor comment formatting fix
[BUG #7039] Provide a way to create application-specific themes in qx.Mobile
[BUG #7013] fixed a glitch that slipped in when processing normal excludes
[BUG #7013] reverting back to warnings when finding unexpandable exclude entries

- i tried to treat them like inlcludes which bomb on such entries
- but as it doesn't change the build result with exclude entries, back to warnings
ensure unique test log file name
[BUG #7040] Added a link to jsFiddle to the playground.
Removed unused folder /  image in the playground.
Removed experimental tag of the rest event (should have been already removed).
Added animation frame tests.
[BUG #7042] new feature overview page for the generator
skip test packages listed in 'ignore' URI parameter
[BUG #7041] Master Page Transition in Page Manager on Tablet 


* Added Getter method for Detail and MasterContainer, for being able to activate page transition on tablets.
[BUG #7042] add entries for contributions and inspector
Merge remote branch 'origin/master'
Minor test fix.
[BUG #6849] Add build-core jobs.
[BUG #6849] Added first draft of build.extras job.