added welcome_email_feature
Merge pull request #461 from YaroSpace/welcome_email_feature

Welcome email feature in settings.yml
Remove unused document/index & document/edit views and corresponding specs
Remove unused documents routes, #edit & #update in controller and corresponding tests
Add cc: sam@agileventures.org to mailers
Change cc address to support@agileventures.org
Rename custom matcher to have_default_cc_addresses
Merge pull request #468 from NikitaAvvakumov/email_cc

Add cc: sam@agileventures.org to mailers

great work!
Merge pull request #467 from NikitaAvvakumov/remove_doc_views

Remove unused documents/index & documents/edit views and corresponding specs