Remove find_by_pk since the code is now identical to the one from Model_Crud
add some tests for Krtek_Cache. Fixed some bugs with help of tests
format value using field type
Merge remote-tracking branch 'origin/master' into fieldset_rewrite

Conflicts:
	classes/model.php
WIP prepare the field for fieldset processing. improve documentation
WIP implement first part of processing, only parse the fieldset once
WIP save is now working, still need more testing