Protect against deleted pages or subscriptions in watching

Merge pull request themarshallproject#121 from associatedpress/delete…

…_user

Delete user feature for admin users

Merge pull request themarshallproject#118 from themarshallproject/upg…

…rade-ruby

Upgrade ruby to 2.3.4

Merge pull request themarshallproject#115 from myersjustinc/case-inse…

…nsitive-login

Be case-insensitive when checking email on login

Update contributors.

Merge pull request themarshallproject#99 from themarshallproject/develop

Version 0.2.1

Version 0.2.0

Merge pull request themarshallproject#50 from themarshallproject/tomm…

…eagher-patch-2

Tweak wording on user help re: feedback form