moved code to delete a selected row in grid into own function

so its easier to override onDelete in javascript
changed min. childContentWidth to 480 or ownWidth, if the image is smaller

each column becomes fullWidth, if the contentWidth gets < 480
if ownWidth < 480 childContentWidth = ownWidth
set model in auto form as Kwf_Model_Abstract instance

is necessary that model object is unique
update modernizr, add modernizr provider by default
added get/setSaveSeconds method to Form Field Timefield

if true timefield value will be saved in correct mysql time format 00:00:00
added trl support for ColumnsResponsive
get chained component with ignoreVisible param in ColumnsResponsiveTrl

optimizes this, 446da24b3c9ac5accfb5709464f31221d2175289
Change styling for image upload
Improve styling for long file name
Add show information on hover
Show error message in image-upload component
Change grey region of crop-image to red if too small
Add translation
Remove background-color to show loading image
Fix bug when switching between user-define dimensions
Save user selected crop region for recalculating aspect-ratio changes
Add comments
Check crop width and height considering scalefactor
Use contentWidth in crop-selection