refs https://github.com/TryGhost/Team/issues/2619
- blur event occurs before mouseup event is called, so when the update button was clicked, the update function has never been called in Safari
- this replaces the mouseup with mousedown which is called before the blur event, so the links are updated properly
closes https://github.com/TryGhost/Team/issues/2126
- Cleaned up the following GA flags: `newsletterPaywall`, `freeTrial`, `compExpiring`, `searchHelper`, `emailAlerts`, `fixNewsletterLinks`.
- Changed the tab design to now include icons all across
- Better way of showing positive sentiment
- Much better responsiveness for the whole page
refs https://github.com/TryGhost/Team/issues/2172
- Careful of flags, having different paginations depending on those
- Little stylistic adjustment to how pagination is shown on engagement bar
- Quite a few feature flag checks to make sure the right style is showing
refs https://github.com/TryGhost/Team/issues/2136
- Newsletter clicks module has new header and box
- Source attribution module has new header and box
- Resources have new headers inside the box
- New split layout if there are two modules side-by-side
refs https://github.com/TryGhost/Team/issues/2119
refs https://github.com/TryGhost/Team/issues/2116
- wires handling of success and error messages on editing a newsletter link
- has the update api commented out temporarily to mock the changes
