[Backend] changed the startingtime and endingtime
[Backend] changed the gitignore file so vendors are uploaded
Merge branch 'master' of github.com:omfgitsjack/justplay into backend

Conflicts:
	.idea/workspace.xml
Merge branch 'master' of github.com:omfgitsjack/justplay into backend
[Backend] update vendors
[Back-end] Fixed Notification Post
[Back-end] Moved the routing for activities/activities-all-this-week up
[Front-end] Edited some screenshots for landing page