Revert "revert commit 7108ede0b2729d42165ceaffa7c8be429ac19aed"

This reverts commit 27ed1eb389a193fb72b3d89dddb3adb9856d27ab.
logo added to the left top corner
logo added to the left top corner
Merge github.com:/SamuraiPrinciple/mindmup
retry when fetching publishing config fails, make network timeout configurable
better error handling when restarting server during publishing, tracking errors in google analytics
changed desc in readme
integrate changes from mapjs for keyboard shortcuts
Merge branch 'master' of heroku.com:evening-tundra-5858
upgrade to jquery 1.9.0
from mapjs - disable tab presses when editing
to keep damjan quiet
keyboard shortcut button
Merge branch 'master' of github.com:mindmup/mindmup

Conflicts:
	views/layout.erb
logo now loading from s3
welcome message moved to a partial view from web.rb
reformat
support for multiple welcome messages
shorter keyboart tips, activating on hover
removed tab info from help, as it no longer works