Update login_block.php

Enables users to tab between fields when logging in (don't have to use mouse clicks!)
Update rawdata.php

Moves 'Average' label to right, ensuring that navigation buttons on layer below can be selected. See http://openenergymonitor.org/emon/node/2132
Merge pull request #46 from emoncms/dev

Merge of dev branch into master, release of emoncms v5.0
updated readme
Update readme.md
Update readme.md
Merge pull request #45 from Paul-Reed/patch-2

iPhone graph layout
Merge pull request #44 from Paul-Reed/patch-1

Tab between login fields
Button widget for dashboards
Merge branch 'master' of http://github.com/emoncms/emoncms.git into dev