Allow Zanata to start even if Lucene lock files are found

As of 4.4, Hibernate Search's NativeFSLockFactory should be able to
   deal with dead lock files.
Output a warning if indexes are stored in NFS.
Fix the bad user management data scroller

Fix the ridiculous width of the scroller,
the current page always being '1',
the synchronisation between the header and footer scrollers.
Fix some broken tests for Wildfly

Also simplify some of the error stuff, as it was causing problems
Merge pull request #609 from zanata/fix-bad-datascroller

Fix the bad user management data scroller
Merge pull request #562 from zanata/skipLockCheckUnlessNFS

Allow Zanata to start even if Lucene lock files are found
Merge pull request #605 from zanata/fix-the-wildfly-tests-again

Fix some broken tests for Wildfly
Fix and add tests missing from the test plan

Some tests have not been run, as they were missing from the plan.
Adds them and fixes the ones that broke during.