Implemented: Keep policy limitations in memory implementation.
Added: Limitation tests to phpunit.xml.dist
Test code simplified.

No need to reload an updated Role instance.
Skip limitation tests for in memory stub implementation.
Integration tests added rest phpunit.xml files.
Use inline delegate method as test fixture.
Tested: ContentTypeLimitation with content edit
Tested: SectionLimitation

This commit adds two new tests which checks the forbid and allow
execution path for a section limitation.
Merge remote-tracking branch 'origin/master' into integrationtests-limitation
Tested: OwnerLimitation with forbid and accept path
Superfluous limitation stuff removed.
Tested: LanguageLimitation allow and forbid path
Tested: ParentDepthLimitation and ContentTypeLimitation

Two tests added that test the allow and forbid execution path of a
ParentDepthLimitation combined with a ContentTypeLimitation.
Fixed: Use generated IDs instead of hard coded magic numbers.
Tested: ParentOwnerLimitation with allow and forbid path
Fixed: Also execute limitation tests for solr backend.
Complex test szenario for several limitation types started
Fixed: Wrong usage of SubtreeLimitation
Tested: failing StateLimitation, waiting for feedback
Updated: do not pass empty value and untranslatable fields to storage