add logo and modify db
Add Test for qrcode.
Change index.html for more simple
Change config to relative path.
Merge branch 'qrcode'

Conflicts:
	nodewebkit/backend/apiLocalHandle.js
Add <br> in index.html
Add TODO: change nodewebkit to other name
Remove dbHandle.js
clean sqlite3
Merge branch 'master' of github.com:IbpTeam/demo-rio
complete API getAllCate and API getAllDataByCate
modify db for contacts
contacts db
add API getAllContacts
Merge branch 'master' of github.com:IbpTeam/demo-rio
remove nouse file test.html
add new interface in common dao and API document in docs
Move server.start into start.js by mode-main
Add back in html
add data in videos and change dao struct