adjusted application status icons in menu header

refs #8755
application list, removed column 'cancel'

refs #14640
staff print view, styling buttons, tablesorter

refs #8755
personal workdays, prepare

* added WorkingTime entity
* implemented method getPersonalWorkDays in OwnCalendarService

refs #10962
personal workdays, implemented create WorkingTime

refs #10962
personal workdays, adjusted person form

* working time included in person form
* working time editable too

refs #10962