Add unregister_script function in atkpage
Export csv improvement
Fix grid searching problem after extended search
Various minor fixing
Export csv improvement
7.1.0 doc
Merge remote-tracking branch 'origin/develop' into develop

* origin/develop:
  bootstrapped searchform savedcriteria
  bootstrapped searchform savedcriteria
  bootstrapped searchform savedcriteria
  bootstrapped searchform savedcriteria
  viewform minor change
  bootstrapped searchform
  deleted unused simplesearch.tpl file
  bootstrapdateattribute search
bootstrapdatetimeattribute with disableDates
Fix date min disabled on calendar
Fix dependency handling on "small date selection" mode
atkDateAttribute: searching improvement, fix dependency handling in "small date selection" mode, fix date min disabled on calendar
Fixing in atkNumberAttribute, atkExpressionAttribute, atkDurationAttribute, atkUpdateStampAttribute
Fix display thousands separator with negative numbers
Export csv improvement
Undo previous fixing
Rendering improvement in atkFieldSet
Form buttons rendering improvement
atkManyToOneRelation improvements
Fix precedence in _getModules (atkLanguage)
Languages translations refining (en/it)