refactor ResponsiveImg

don't throw private functions into Kwf.Utils namespace

this commit didn't change code/functionality
use abs scroll change, fixes scrolling up that also should load images
Ext4: don't initialize with null as auto-detecting the button doesn't work anymore then
add isVisible calls in benchmark box

move to central helper function
support checkVisiblity for onElementWidthChange
use ext instead of jquery for checking visibility, as it is 2x faster
Add getItemWidth to Carousel to calculate dynamically width of item
Add doubleTapToGo
Remove debug message
Merge pull request #189 from Ben-Ho/master-onContentReady-Scope-update

Update scope-usage for onContentReady to work with new version
import buffer: write buffer after a number of buffered rows

to avoid too much memory usage
fix for the map type control

the map type control was always disabled
Ext4: add DragDropOrder controller that allows reordering rows
simplify user model

check for test password in row, this avoids code duplication in login method.
additionally it allows usage of validatePassword with test password.+
don't send applicationAssetsVersion for ajax requests in frontend

this doesn't make much sense in frontend.
fixes error message in eg. ajaxview after cc assets
Improve speed and correctness of callOnContentReady
date picker styling

fixed the chrome width issue also for the frontend
show parent page in mobile menu for sub pages because these pages can not be called

only show parent page if setting is set and not links on first child page
support ext4 ux dependencies
Rest Controller: make fillRow protected to allow overriding it