Allow payment modules to change postsale parameters "mod" and "id" (#1137)
Fixed comparison of module id
Merge branch 'hotfix/2.1.3'
Starting 2.1.4 hotfix branch
Database update trying to add attributes with no internal field name to database
Allow to extend the validation conditions
Removed the breadcrumb in product group view (does not make sense)
Removed the breadcrumb in product group popup (does not make sense)
Fixed missing TL_SCRIPT in group.php and postsale.php (#1148)
Datepicker icons were missing in reports module in Contao 3.2 (#1161)
CS
Invalid date input caused exceptions (#1162)
Creating attributes in DCA caused fatal error (#1166)
Invalid input in related products field caused database exception (#1158)
Fixed incorrect display of variant attributes

Due to a syntactically incorrect inline function, the string "Array" was passed to the template instead of the correct key/value combination.
Needle/haystack order of strpos()

According to [documentation](php.net/strpos) the parameters have to appear the other way around, else the call will always return false.
Merge pull request #1168 from systemhaus/feature/payone-postsale-fix

Needle/haystack order of strpos()
Merge branch 'feature/payone-postsale-fix' into hotfix/2.1.4
Fixed incorrect variable name
Merge branch 'master' of https://github.com/systemhaus/isotope_core into hotfix/2.1.4