Update lt.po

Mainly fix up the different versions of " and some translation updates
Merge pull request #143 from vytux-com/patch-6

Update lt.po
Added missing translation, some fixes
Merge pull request #144 from Art4/patch-1

Added missing translation, some fixes
CSS typo
Undefined variables error in import wizard
Refactor global user functions into new User/Auth classes
Hard-coded table prefix
Remove unused code
Conflict in variable names
Error handling logic in login.php
Create separate route for logout
New User class breaks changes log #145
Consistently use WT_ROOT in the require/require_once statements (where missing)
Merge pull request #146 from jon48/hotfix/proposal

Consistently use WT_ROOT in the require/require_once statements
Merge remote-tracking branch 'upstream/master'

Conflicts:
	includes/functions/functions_db.php
	includes/session.php