start xwiki4-unstable development
change test-dependency to use include in parent-pom
readd xwiki-commons-test-component dependency
fix import path for AbstractComponentTestCase
add tests for celements-shared-tests component
fix servletEnvironment setup (add mock servletContext)
add testInitCache
backport changes in unstable-xwiki4 branch
especially for adding replayDefault and verifyDefault