testMaker Code

Minor cosmetic changes to the import/export page. Tries to clear the structure a bit.

PHP 5.3 mktime() fix

fixes 2886492; the checkbox is now also greyed out (fake checkbox without id);

Ticket 2886492.
Disabled items or itemBlocks are not longer disabled. Because perhaps they
need for further feedbacks. They are greyed and lined out now.

fixes 2886492; feedback items on deactivated blocks are now deactivated (greyed out);

Changed some Infos, Scoring Options are Saved after the 1st Step, the Scores after the 2nd.

fixes 2837481; feedback: alignment of checkbox

Fixes #2800580;

Fixes #2747858; changed feedback message with tests accessed per TAN

fixes 2907340; Scoring options of feedback dim, man 3h for two "="