Merge branch 'patch-1' into 'master'

Fixed "Wrong QuerySQL-Query" in aps_installer

`db->queryOneRecord` does add `LIMIT 0,1` to the end of the statement resulting in a syntax error due to the misplaced semicolon:

`Thu Jan 12 21:41:01 CET 2017 12.01.2017-20:41 - WARNING - Falsche Anfrage / Wrong QuerySQL-Query = SELECT VERSION() as ver; LIMIT 0,1 -> 1064 (You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'LIMIT 0,1' at line 1)`

See merge request !504