Update ContentMetaModel.php

Pass the number of items to the ce-template
Update ModuleMetaModelList.php

Pass the number of items to the module template
Merge pull request #390 from davidmaack/patch-2

Update ModuleMetaModelList.php
Merge pull request #388 from davidmaack/dev

Update ContentMetaModel.php
Change a urlencode to a rawurlencode. Now it is possible to filter for string with special chars.
Merge branch 'master' into dev
Ensure we have a list of valid ids before trying to retrieve them from the database.