modContextSettingGetProcessor
modContextSettingRemoveProcessor
modContextSettingUpdateProcessor
modContextSettingUpdateProcessor and make use of context setting update window instead of system settings one
Fix update/remove as in #12099
modContextSettingUpdateFromGridProcessor and grid fix to use it
Name of processors as path to them
modContextSettings class based processors

* origin/pr/12123:
  Name of processors as path to them
  modContextSettingUpdateFromGridProcessor and grid fix to use it
  Fix update/remove as in #12099
  modContextSettingUpdateProcessor and make use of context setting update window instead of system settings one
  modContextSettingUpdateProcessor
  modContextSettingRemoveProcessor
  modContextSettingGetProcessor
Class based login processor
Clear code and remove login.php