fixes #233 - In the "Show" page for a Host, Build link should not be visible when Unattended is false.

added titles to hosts show page actions

fixes #220 - show all used puppet classes when using storeconfigs

• Remove active scaffold from hosts controller.
• changed default host graphs from one day for up to one week
• added dynamic dropdown boxes for host creation / edit page (e.g. for puppet classes, operating systems etc)....

added common links to host show page and pagination

added google_visualr and converted dashboard and hosts graphs

fixes #151 - add show host page
Added a nested link to hosts to lots of controllers