XSS Protection, Several bugfixes

Fixed bug while registering new user.
Fixed maxlength on register page.
Fixed maxlength on profile edit page.
Fixed bug not displaying tag on song page.
Fixed bug while getting latest bumbls.
Fixed double escaping strings while commenting.
Added message on profile page after registration.
Cross Site Scripting Protection. No longer able to execute javascript
through user input. Use htmlentities while outputting user input in the
html.
Several code-style fixes