[#62474778] Need to clear session information if longer than X min/hr

If a user types in a specific URL, after being challenged by authentication, please redirect them to that URL
[#62474778] Need to clear session information if longer than X min/hr

Fix remove return_to path from the session after redirecting to oauth app location
[Completes #65822634] Create new email template for users who change their email
[Fixes #62474778] Need to clear session information if longer than X min/hr
Merge branch 'master' of https://github.com/GSA-OCSIT/mygov-account
[Completes #65822696] User receives an email to their old email address when they change their email
[Completes #65822696] User receives an email to their old email address when they change their email
[#65697104] Added 508-compliant tooltip for Zip field
Removed unused code
Adds capstrano-slack to Gemfile
Ignore Vagrant files
Updates rails to 3.2.17
Removes slack from Gemfile
[Completes #49516171] Sandboxed applications should not let users get to the authorization page
Adds latest ruby ver to Travis
[Completes #66869056] User should be informed that '*=Required Field'
[Completes #66869056] User should be informed that '*=Required Field'
Merge pull request #38 from GSA/65697104_accessible_zip_info

[#65697104] Added 508-compliant tooltip for Zip field
[#66385462] Investigate PayPal 3rd party login issues
Adds 2.1.1 to travis.yml