testMaker Code

Fix bug in statistic. Disable subtest, item blocks and items are not longer count as available items.
Fix bug when start a test in TestMake.php . When subTestId is 0 the items are not longer counted two times.

Ticket: Korrekte Antworten besser erkennbar - now no longer the name of a image, but the image itself is shown

Show the variable testVersion in test details.

Correct typo and add variable TestVersion to data export.

Add column disabled to blocks_connect

Deactivating of an item is now correct.

Ticket 2103740 and 2103679 deleting Subtest and ItemBlocks

Add the "value lables to the SPSS syntax"

Fixes #2115896; also fixes problem regarding the execution of preview as non-admin user;