Version 2.0.0 beta 6 - Under the hood improvements

This is primarily a release with a lot of under-the-hood changes.

New features:

• In addition to impersonation, allow changing the current "context". This is more secure, because impersonation bypasses two factor authentication. #29
• Implement management of impersonation. #29
• Implement add to homescreen #53 #55
• Add application startup checks to check for common issues
• Some mobile lists now use "swipe to action" lists common in mobile apps

Improvements:

• Better time to first render on low-speed connections (2G, 3G). #48
• More parts of the application are lazy loaded. #45
• Use ES5 / ES2017 depending on browser feature support. #46
• Use supported ES2017 minifier: smaller bundle size. #56
• Drop some dependencies to improve download size. #43
• Fix font size in about page
• Binaries are now built with source link
• Dashboard text-to-background contrast improved

Fixes:

• Mobile views not triggered correctly on Android #40
• Email templates were not published correctly
• Tooltip on mobile menu caused alert error
• Fix service worker behavior in mobile Safari

Other:

• Rebased repository because accidently I inserted some file headers with protected brand names