other / mew-iview

use date.toLocaleDateString to format year/month

Tabs add scroll

Improve export to CSV functionality

add missing event in callback

correct behaviour when initialising date-picker with a empty string

 - added`callback`option so we can get CSV data in case we do not want
to download
 - added options:
    - `quoted` for cases when we have line breaks in content
    - `separator` for cases when we have commas in content

DatePicker: weekStartDay did not influence the order of the weekdays in the header

remove unused code, small refactor