Added responsive function for carousel

- calculating the item to show on container width
- hidding arrows if count equal or less item count
Merge pull request #161 from darimpulso/carouselResponsive-master

Added responsive function for carousel
Ext4 Controllers: add bindable controllers

More flexible alternative to FromToGrid and GridToGrid. Should be used instead of those
Bugfix Carousel

- return false onclick if number if no next slide
- show and hide slides depending on content width

reviewed by Niko
make contentWidthBoxSubtract optional

useful if resetMaster is used
Fix checking correct component class
REST Model: send full dataset after saving like get does
Bindable: allow saving if nothing is loaded
select first form field on add and do nothing else
add GridBinding bindable

that allows usage of grid with binding as binding
add From controller that implements save button functionality
Fix syntax error
add Countries store which provides data directly in assets
move delete code into own method so it can be overridden

can't use delete as fn name as it's a reserved word
allow filters having initial value
Make "fallback" getExifRotation only method

Imagick loads complete image and got very slow on big images
allow filter value '0'
add trl for extensible
Fix tests
moved Kwc_Columns_Component to Kwc_Legacy_Columns_Component

this version of columns is very old and will be replaced with a newer one