ItEr32S03RequirimentosItEr31S03: Refactoring data model of CalendarException
ItEr32S03RequirimentosItEr31S03: Refactoring data model of CalendarException

Removed the concept of interval in favour of just using CalendarExceptionDates

skylow95/libreplan,skylow95/libreplan,LibrePlan/libreplan,PaulLuchyn/libreplan,LibrePlan/libreplan,poum/libreplan,skylow95/libreplan,PaulLuchyn/libreplan,skylow95/libreplan,skylow95/libreplan,poum/libreplan,skylow95/libreplan,PaulLuchyn/libreplan,LibrePlan/libreplan,LibrePlan/libreplan,Marine-22/libre,LibrePlan/libreplan,LibrePlan/libreplan,poum/libreplan,Marine-22/libre,poum/libreplan,Marine-22/libre,poum/libreplan,dgray16/libreplan,dgray16/libreplan,PaulLuchyn/libreplan,dgray16/libreplan,LibrePlan/libreplan,Marine-22/libre,Marine-22/libre,PaulLuchyn/libreplan,dgray16/libreplan,PaulLuchyn/libreplan,poum/libreplan,dgray16/libreplan,PaulLuchyn/libreplan,dgray16/libreplan,dgray16/libreplan,Marine-22/libre