Update TCPDF library from 6.0.062 => 6.0.071
Update Zend Framework from 1.12.4 => 1.12.6
Get composer to update itself in build script
Create WT_User class, to provide access to user objects/functions
Further development of new User class
Updated Turkish translation by hsarslan / fix plural rules
Update lt.po
Merge pull request #137 from vytux-com/patch-3

Update lt.po
Merge https://github.com/fisharebest/webtrees