Added markAsRead API method with optional parameter for specifying single article.
Added the rss_smart_episode_filters and rss_download_repack_proper_episodes keys to preference api.
Added matchingArticles API method for retrieving articles that match specified rule.
Normalize Web API method names.
Allow to use alternative Web UI.
Switch Web API version to standard form (i.e. "2.0").
Improve Web UI translation code.
Retranslate changed files.
Add Web API for RSS subsystem.