right id handling for datagrid
adapted datagrid to be able to change columns; toolbar items can now be en/disabled; column-options takes instanceName
column-options: added default fields; merged from develop
merged conflicts from develop
reviewed and formated column-options
reviewed and formatted
reviewed and formatted datagrid
reviewed pull request
implemented merge requests
merged conflicts
small bugfix (variable declaration)
added buid files
merged conflicts
Merge pull request #135 from massiveart/feature/datagrid-columns

Feature/datagrid columns