Merge pull request #5 from flyingice/master

subscription and preference functionality
Merge pull request #6 from flyingice/master

DB update
Merge pull request #7 from flyingice/master

db collation utf16 to utf8
Merge pull request #8 from flyingice/master

fix for email address check Chinese version
Merge pull request #9 from flyingice/master

DB update bug fix + UI update
Merge pull request #10 from flyingice/master

move email check to server side
Merge pull request #11 from flyingice/master

clear email input at submission time
Version 13

Fix Language fix
Merge pull request #12 from michaelzzm/master

Version 13
disable enter key at form submission time