save button on uploading solution, redirect to the HTML page instead of the json response
added Role and User table (refs #449, #450)
implementation of UserDetailsService used by spring security (refs #449, #450)
added permission level of security, roles are containers of permissions. (refs #449)
implementation of the populating database with initial data
implemented basic authorization (refs #449)
Merge branch 'master' of https://github.com/przemkovv/sphinx