Implemented readonly handling.
We do not save a field if the eval in the DCA tells it is read only.
We enforce this, as almost any browser supports changing of input field elements
and posted user data can not be trusted anyway. Therefore we simply ignore such fields then.
Add autoload information to composer.json
Update the sorting and the PDP functions.
Add autoSubmit for language_switch.
Bugfix for doSave. Improve the check-function for saving an item.
Fix the layout
Extract AbstractGeneralModel from GeneralModelDefault.
Merge pull request #78 from tristanlins/feature/abstract-model

Extract AbstractGeneralModel from GeneralModelDefault. - get/setMeta() are now contained in the abstract base class.
Merge branch 'dev' into contao3

Conflicts:
	composer.json