problems: Add corrected_solution field to the UserSolution
settings: Move DEBUG, DEBUG_TEMPLATE and ALLOWED_HOSTS to local settings
settings: Use cached template loaders only if not in DEBUG mode
templates: Center the profile image in userprofile_detail.html
templates: Extent user profile's template
translations: Update translations
competitions: Add a discussion panel
templates: Make comments flat_list.html template more flexible
base: Update Font Awesome to 4.2.0
base: Update menu with font awesome icons
templates: Remove register link from the menu
translations: Update translations