OO-3339 beautify and i18n manual correction wf, fix broken element css for cancel button and callout window

OO-2830 fix several bugs in members display code, bring back configurable user properties context, also for avatar view

OO-2515: save the master file untouched, deliver  more pixels for the print view of the members course element, add REST api methods to check if a particular size of portrait is available

OO-2409: properly set a right margin for the help and subscription to let enough place for the open button

OO-1068 don't animate menu on small screen reload, add custom form footer message for login, hide toolbar in course sites, add icon configurability

OO-1068 fix different portrait image sizes, make it mid-sized, make expenditure of work field more flexible (ZAG review)