Fixed issue #08946: mandatory numerical input shows numerical only validation error
Fixed issue #08672: Sub question min_value_n attribute in mandatory question Filtered can not be answered
Dev: like other : leave mandatory for mandatory attribute
Dev: don't fix DATE question type
Dev: maybe same fix to apply elsewhere
Dev: we leave the 'red' color BUT : see bug(dev) #8335
Merge branch '2.06' of github.com:LimeSurvey/LimeSurvey into 2.06