filters wip
basic filters implemented
sliders in the filter
sql queries working for filters
Merge remote-tracking branch 'origin/develop' into feature/1555_filters
Merge branch 'develop' into feature/1555_filters

* develop: (38 commits)
  revert aws-sdk gem version
  assign table_id at destination when relocating a user
  Groups merge dialog's tests
  use Redis expire instead of pexpire to support CartoDB production environment
  Adds ellipsis to long baselayers names
  Adds support for mabpox URLs
  Fixed width for the basemap dropdown
  wip
  Encode the single quotes
  Removed url_purge_command from app_config
  Removed purge_url function from Varnish lib
  Refactor digit conversion method
  fixed #1768
  Normalize digit separators when converting a column from text to number
  Add rake task to set Redis expiraton for existing DataImport logs
  set default expiration for DataImport log
  Updates NEWS.md
  Adds message in the count method of the spatial merge
  When the user selects the count method in a spatial merge, we now show a message
  Renames Heatmap to Intensity. It correctly moves the wizard navigation when the selected option is in the second page
  ...
Merge branch 'feature/1555_filters' of github.com:CartoDB/cartodb20 into feature/1555_filters
Adds filter icon
selection filter working
Adds crossfilters
Removes old comments
Changes the domain of the histogram
merged
fixed histogram calculation
Merge branch 'feature/1555_filters' of github.com:CartoDB/cartodb20 into feature/1555_filters
fixed tests
filter errors, query management and fixes
fixed tests
victor
Fixes histogram generation