Move varnish triggers from user tales to CDB_TableMetadata

Closes #197
Jira ref CDB-241
html for new starting page done
Merge branch 'master' into feature/CDB-777
actions for new welcome page
actions for new welcome page
adding specs file
added cumulative switch to torque wizard CDB-779
Create new AutomaticGeocoder model
Basic AutomaticGeocodin model stuff
CDB-1055 #resolve Add ability to convert Unix timestamps to timestamptz
new combo for filters available
updated cdb
using cartocss library inside cartodb.js
Link automatic geocodings and geocodings
Link geocodings and tables using the id
Link tables, geocodings and automatic geocoding models

Table should remove all automatic geocodings after removal
Update specs
Add automatic geocoder resque job
WIP automatic geocoder event machine runner
merged with master