Merge pull request #123 from phuonghuynh/master

User Register page
add alert infor
Merge commit '48d52f51875bf2f3fa5127c13fa4e899c456fe36'
Merge commit '48d52f51875bf2f3fa5127c13fa4e899c456fe36'
Merge commit '50a21591e13ea7d63c6d61ab37e073664fb4cb4d'
Save salary as number