Merge pull request #241 from pb66/master

Multigraph timeWindow bugfix
Update multigraph_edit.js
Fix missing day in myelectric
Allow bargraph to use realtime feeds
Updated simplezoon visualisation to allow using detailed data for daily type
Fix for zoom visualisation
Fixed timezone shown as n/a bug
Check for mysql engine when creating histogram feeds - need to extend on this
Correct and clearer api example for creating a feed
sort both ways, thanks to euqip https://github.com/emoncms/emoncms/issues/245
Fix thanks to euqip https://github.com/emoncms/emoncms/issues/245
Further improvements to sorting thanks to euqip https://github.com/emoncms/emoncms/issues/245
Update index.php
Moving documentation from docs repository to docs folder within emoncms main repo, removes duplication of installation guides with the aim of making the documentation more maintainable
debian install notes and front graphic
Backup and Upgrading documentation
Update Backup.md
Update Backup.md
Update readme.md
Update readme.md