added logic to add redirection when there is a typo in url
moved isWAMPage to model from hooks helper
added two new methods: getWAMSubpageUrl() and getWamPagesDbKeysMap(); added instance caching and moved here isWAMPage() method from hooks helper class
moved new logic to seperated method
performance change in getWAMSubpageUrl() method
removed unnecessary method
BugId:51338 HAWelcome Minor fix.
Merge pull request #614 from Wikia/fb51338-hawelcome-minor-fixes

BugId:51338 HAWelcome Minor fix.
extracted Title::newFromText() to new method in favour of unit tests
added unit test for WAMPageModel::getWAMSubpageUrl()
fixed WAMPageModelText.php after manual marge conflict
Merge branch 'consumer-sprint37-bugid-100800' into dev
bugid-100875 | WAM filter - fixed date conversion
BugId:51338 HAWelcome Messaging.
Merge pull request #616 from Wikia/fb51338-hawelcome-minor-fixes

BugId:51338 HAWelcome Messaging.
bugid-100875 | WAM filter - fixed date conversion
bugid-100875 | WAM filter - fixed date conversion
Change message for mobile spotlight
bugid-100875 | WAM filter - fixed date conversion
changes after code review; handled unthought before cases such as in example: redirection of www.wikia.com/wam/top_video_games_wikis to www.wikia.com/WAM/Top_video_games_wikis