added gem for fulltext search
added validation for non-empty namespace and title
added versioning support for pages, changed admin ui for this update
removed clean_cache method, comments
added rollbacj functionality
removed old work with history
BROKEN history on frontend
implemented search with mongodb_fulltext gem
converted pages#show to haml, simple ui for versions
simple script for content migration
made admin ui more pretty
changed search engine
added last editor to page
moved 'strip' to model
added propery 'mentioned pages'

added backlinks implementation
added field content
removed old work with cache
formatting
formatting
removed keywords from admin ui
improved search engine

removed part with mediawiki api
introduced property mantioned pages
updated task with content migration
fixes for search and mentioned pages