fix exception bugs
fix result.views.publish enter limit bug
Fix login, message and bar chart page
Add modal feature and view button
Adjust the position of error message in login template.
Fix register href in login template
Modify birthday placeholder attribute
Fix url bugs in homepage
Modify urls of view button
add create quest limitation | merge add_quest.html and modify_quest.html to edit_quest
fix publish bug
Fix recession bugs of answer a quests