updated homepage, added register/signin views
Change to PHP 5.3 to match production server's PHP version

* prevents the possibility of using new shiny PHP 5.5 syntax and
  having our code break in production.
Properly symlink the virtual host configuration for Apache2

* for some reason it wasn't being migrated over. Fixed that with
  a hack.
Merge branch 'add-views-and-controllers' of https://github.com/DiscoBBQ/MeTube
Merge branch 'master' into 1-add-user-model-registrations-profiles-messaging
Create User Model with create/update/find

* Can create a user by instantiating a new instance, setting values,
  then calling save()
* Can find a user with User::findById()
* can update a user by updating values of found instance and saving
* hashes the password
Setup controller for registering users

* Creates a new instance of User model, sets values, attempts to save
  * redirects to home if the save was successful
  * redirects back to registration form if there were errors.