add the basic page of manage db, querying collections.
complete the query-collection function from db,and show it in the front page.
db manage is completed except the SAVE function.
DB backup. Add the DB manage page.
Merge remote-tracking branch 'origin/master'

Conflicts:
	app/api/projects.js
	app/routes.js
	public/javascripts/clients.js
DB backup.
Merge remote-tracking branch 'origin/master'
format the data querying from db in the db-manage page.
Merge remote-tracking branch 'origin/master'

Conflicts:
	app/routes.js
	app/views/layouts/master.hbs
	public/javascripts/app/aboutController.js
Merge remote-tracking branch 'origin/master'