DAT-2010 Use direct access instead of querying Solr.

Solr might have stale data when it's called due to replication time;
This removes Solr from the flow, querying the authoritative source
of data (MW app in this case) instead.
CE-1103 Initial commit - extension setup
CE-1103 Add a i18n file
CE-1103 Change extension's name
CE-1103 Remove old files
CE-1103 Add messages to display
CE-1103 Add a JS module
CE-1103 Add controller
CE-1103 Send a Nirvana request
CE-1103 Sync JS module with the controller
CE-1103 Check if user has already seen a popup
CE-1103 Add dependencies correctly
CE-1103 Add caching to response
CE-1103 Add tracking of clicks
CE-1103 Document the extension
CE-1103 Remove unnecessary message
CE-1103 Correct a message description
CE-1103 Change a source of wiki's info
CE-1103 Use a parameter instead of a global
CE-1103 Use short array notation and put Enlish in the front