Working Comment Display

Displays comments from database on relevant models. Also links back to
user pages on model page and comment.
Posting Comments Implemented

Users can now post comments on models.
Edit account added

users can now add extra pieces of information about themselves on their
account profile.
Added Comments to Files

Help me remember what does what before I reorganise the file structure.
Working Upload with 3D model rename

Inputs data into database and uploads & renames a model.