updates UI to bootstrap v2

Adds VNC support within the browser

At first, this allows to view oVirt managed hosts within foreman.

fixes #1540 added suport for provisioning on ovirt/rhvem using fog.

This patch addes a compute resource concept within foreman

Signed-off-by: Ohad Levy <ohadlevy@gmail.com>

WIP rails3 migration

fixes #1276 - Non intrusive javascript pie and bar

fixes #1174 - some error messages may show up twice

wip #1231

fixes #1236 - multiple actions modal

fixes #1237 - seperate page header from title

new UI for foreman