to allow specific styling
also fixed an issue with gridview sort indicator css.

fixes #1000

fixes #1736

fixes #1717

Fixes #1597: Added `enableAutoLogin` to basic and advanced application templates so "remember me" now works properly

Backend should be always totally closed for indexing by search engine robots

we should not provide one in the package but developers should commit
them when starting a new project so that all share the same versions
and only explicit composer update command will change that.
Escpecially important when deploying to production.

This reverts commit a28e7470.

Cleaned up a few comments ... hope its not my OCD again... :-)

Reverted name to ```closeButton``` to be in sync with the bootstrap ```Alert``` widget.