rm footer
rm repetitive links
concise
simplify default home page
rm cruft
Merge branch 'master' into slim
Merge branch 'master' into slim
Merge branch 'master' into slim
Merge branch 'master' into slim
Merge branch 'master' into slim
Merge branch 'master' into slim
Update COPYRIGHT.txt

got rid of useless comments and contact info for commercial use in contradition to the GPL license.
Merge pull request #559 from saschaben/master

Update COPYRIGHT.txt
improved mobile-first view
textual changes per @saschaben
Merge pull request #531 from Trott/slim

Slim, trim, fit welcome screen