Database: fixed caching of referenced entries
Database: added test for tag-author relation.
Database: better related call caching
Database: fixed bug caused by cache-emptying by garbage-collector (thanks @juzna)
Database: huge memory optimalization, implemented GroupedSelection prototyping (thanks @juzna)
Database: fixed sharing accessed columns
Database: fixed DiscoveredReflection & enhanced test data
Database: fixed runtime cache of multiple same targets
Database: fixed case-insensitivity foreign keys
Database: drivers typos
Database: rapidly improved cache performance & fixed cache bug (thanx @matej21)
Forms: rewritten SelectBox [Closes #724]
Forms: MultiSelectBox::getValues() returns correct numeric keys (BC break)
Forms: fixed json_encode in 78511c56
Merge pull request #669 from mkoubik/tests-presenter

Tests: UI\Presenter::storeRequest()
Test: added help, fixed error messages
Database: fixed Selection::find()
Merge pull request #745 from HosipLan/bug/selection-find

Database: fixed Selection::find()
Database: better method names
Nette\Callback: prevent wrapping itself as a callback