Added a class to perform google autenticator checks
File with double auth utilities to be accessed by ajax
Added a new table called 'tuser_double_auth'
Added an option to allow the users to enable the 2 step auth
Added some new rules
Now the user can enable and configure the 2 step auth
Modifications on the login process to include the 2 step verification
Modifications on the ajax calls to gain compatibility
Moved some functions
Fixed some paths
Minor fixes
Revert "Fixed some paths"

This reverts commit 7d1894e2ca985b9fad22c8cbff5373c17f2e6909.
Fixed the 2 step login
Added the double auth functionality to the mobile version
Added a new command to disable the double authentication for the specified user
Merge branch 'feature/ticket#1579-TwoFactorAuthentication' into develop

Resolved conflicts:
	pandora_console/extras/pandoradb_migrate_5.1_to_6.0.mysql.sql
	pandora_console/extras/pandoradb_migrate_5.1_to_6.0.oracle.sql
	pandora_console/extras/pandoradb_migrate_5.1_to_6.0.postgreSQL.sql
	pandora_console/include/styles/pandora.css