[#1708] can change task color
[#1813] add placeholder for drag drop event
[#1814] add sly.js and moment.js,  endless scroll
[#1708] can change task color
fix a git conflict
[#1612] put the member_invitation_notification at the top of push_notification, and the member_invitation_notification will be disappear after dealt with
[#1943] fix bug about location of edit date's pop-up
[#1814] use rails to generate the calendar
[#1814] fix the resizeable for scroll endless
[#1814] add pending for month
[#1814] fix the filter bug
[#1176]setting text align for project name in _info.html
[#1814] modify  event position display
[#1814] fix event position bug when resizeable
[#1958] fix bug about highlight placeholder
[#1958] fix bug about position of yellow placeholder
[#1982] add scroll to prev and next month
[#1814] fix event position bug when drop from next month
[#1814] change resize length for event
[#1814] fix event display postion vertical