Prepare for release version 1.4.0
- Update: Changed e-Mail support address to the WordPress support forum
- Update: Language EN and DE
- Add: Tab for Plugin Diagnostics
- Add: Donate link to the installed Plugin overview page
- Add: Donate button to the "HowTo" tab

git-svn-id: https://plugins.svn.wordpress.org/footnotes/trunk@983360 b8457f37-d9ea-0310-8a92-e5e31aec5664