Added trim() for validated fields
CONN-293 - UTF-8 Whitespace in title breaks the modal
CONN-295 - Error message shown on long non-latin title
WikiaSanitizer
CONN-294
Mixture of valid/invalid characters break the modal
added unit tests for WikiaSanitizer::unicodeTrim()
changed pattern for preg_replace() in WikiaSanitizer::unicodeTrim() so it passes unit tests
removed unused WikiaSanitizer::removeDoubleSpaces() method, refactored forum code and therefore fixed the bug
Merge branch 'CONN-334' into CONN-167
extracted checking title&desc lengths to seperate methods, re-used it in ForumExternalController
Merge branch 'dev' into CONN-167
Merge pull request #2495 from Wikia/CONN-167

Fixed create board modal breaks when empty spaces are typed into fields