Merge pull request #3 from MongeziNombewu/features/improvements-for-everegg

Added billing mxpress optoins
Added MxitUser object with db persistance and custom google analytics
Merge branch 'features/improvements-for-everegg' of github.com:Kazazoom/mxpress into features/improvements-for-everegg
Removed mxpress paging from book template
Enabled persistUser and updateUser Mxit options
Removed unused page variable
Changed session variable name for mxituser object
Turned persist and update to true because mxit_options aren't avaiable when mxitUser is created
removed debug log lines
[MxitUser] Migrated sql command/queries from PDO to wpdb (Wordpress DB object).