Create reservation.

Added class ClientView
Perfomance and some bug fix while selling and returning tickets.
Added logger to SqlRep class.
Merge branch 'Ivnst-fix'. Perfomance and some bug fix while selling and returning tickets.
Changed row index location on ticket selling form when scale is small.
Selling reserved tickets
Updated ticket selling page. Rearranged button, changed info list.
Rearranged button on sector configure page.
Added UtilsController. Added method for storing cached data.