Fix: OXUIB-2615: Invalid dates allowed for search

Implementation notes

This throws an error message if a entered date is invalid. This is only triggered when the date matches the regex structure however, something like 123/1234/2013 will therefore trigger it, since it's not a even matched as a date in the first place.

Enter either a invalid single date or range, which will cause an error message and prevent the search from being triggered.

Examples: "33/33/2033", "10/01/2012 - 33/33/2033"

This is the first part of the bugfix, the other fix is in AppSuite 8

Closes OXUIB-2615