[#73363630]#73363630 improving time slots form
[#73363630]#73363630 add multiselect, switch button, make responsive design and change on controller side
[#73363630]#73363630 fix error of frozen string
[#73363630]#73363630 make the form responsive for new and edit of time_slot
[#73363630]#73363630 replace range slider by dropdown
[#72962230]#72962230 design attendance/new and edit and make responsive
[#72962230]#72962230 make design more user friendly
update locales, bin and removed subcontractor
fix conflicts for merge