Merge branch 'master' into develop

* master:
  Update README.md
Merge branch 'master' into develop

* master:
  No notifications on bugfixes
  Bugfix: account information when not logged in
  Persistent storage of warnings
  Only one day left
  Bufix
  Bug fixed
Typo fixed
Working on 1.6
Revised file structure
Manifest moved
Added jsbeautifier task
Working on options
Fixes
Working on options page
Fix for smaller resolutions without flexbox
Fix for smaller resolutions without flexbox
Form fixed
Merge conflic resolved
Open options on install
Added save CSS animation
Check for valid input
Added version number to options page
Option loader added
Typo's and cleanup