Basic Configuration for bonus types

* introduced new handler BonusTypeHandler
* config\bonusnames.json converted to common format and splitted info main and localizable parts
* hanlders initialization refactored

git-svn-id: https://vcmi.svn.sourceforge.net/svnroot/vcmi/trunk@3273 4dfc6b2a-8b31-0410-aa91-d6c70e3ac834