Engine:
     - modified GuiBeginDraw() method of ThemeBase to support custom content inside the <head> tag
     - added cryptography configuration options to cfg.inc
     - updated engine CSS
     - changed global charset to UTF-8 for compatibility with Romanian-specific characters
     - added CryptographyHelper for password encryption/verification and string encryption/decryption and SSL session management
     - debug messages are now printed after the web page has finished drawing
     - added PerformanceHelper with server benchmarks
     - added debug messages in SQLHelper for query profiling
     - added a Sanitize() method in SQLHelper for adding escape characters to queries generated from user input
     - index.php now starts a PHP Session for user management
     - added abstract classes for Views, Controllers and Models for standardization purposes

App:
     - added a CommonController from which all controllers derive from
     - all Models are now derived from CommonModel
     - added Login/Logout/Register MVCs to handle user management
     - updated String Resources for English and Romanian
     - updated Materna app CSS
     - added user management functionality
     - updated Materna logo
     - added a Top Bar with search and user management functionality
     - forced HTTPS for pages which handle user input
     - moved draw logic from View constructor to Draw() methods