calculate runned objects

This version introduces multiple enhancements:

allow to get information how many times all classes was executed

Details of additions/deletions below:
--------------------------------------------------------------

Modified:   /Lib/loader.php
            -- Added --
                getClassCounter to return information about class execution number
            -- Updated --
                getObject, changed documentation
                getClass, added register callback to increment class execution
                loadClass, moved to end of file

Modified:   /Lib/config.ini
            -- Added --
                core_form enabled
            -- Updated --
                changed version from 0.18.1 to 0.19.0

Modified:   /Lib/Core/Blue/Model/Register.php
            -- Added --
                $_classCounter to store information about class execution number
                getClassCounter to return information about class execution number
                setClassCounter to set information about class execution

Modified:   /Lib/Core/Blue/etc/config.ini
            -- Modified --
                changed version from 0.9.0 to 0.10.0