Make docs rebuilding configurable

The docs are hardcoded to rebuild when in development mode, unless the
`rebuild` parameter is passed in. This makes it very slow (>10s) when
working on it, so let's just make it configurable.

Rebuild still on by default when in development mode, and off in
production to maintain the same behavior. But it can now be easily
configured locally in `config/settings.local.yml`.
Ditch bad node jig access reset stuff for the Chef jigs.
Strip out all non-attribute sections from the schemas
Add new role information to facilitate injecting roles into Chef.

This also provides information on which roles should be automatically
bound to newly-discovered nodes and to the initial admin node.
Update status function.
Merge pull request #497 from VictorLowther/pull-req-master-9bdf40d9e246f0feb72ee603555057fa7d132fd9

https://github.com/crowbar/barclamp-crowbar/pull/497

Merged by devtool for VictorLowther
Fix failing unit test for status checking.
Fix translations for proposal created status.
Merge pull request #496 from jamestyj/jamestyj-docs-rebuild

https://github.com/crowbar/barclamp-crowbar/pull/496

Merged by devtool for VictorLowther
Fix Menu positioning

 * Makes the main menus easier to reach
Simplify linux_compile.sh

- Do the same thing with less lines
- Remove commented out lines
Add seed data

These seed data are useful during development, especially when working
with the UI and you don't want to deal with the overhead/hassle of
setting up actual nodes to manage.

Load them by running `rake db:seed`.
Merge pull request #503 from crowbar/kwwii-menu-fix

Fix Menu positioning
Merge pull request #504 from crowbar/jamestyj-linux_compile

Simplify linux_compile.sh
Merge pull request #505 from jamestyj/jamestyj-seed

Add seed data
adding build instructions to devguide
Merge pull request #508 from simonjj/pull-req-master-da6e25e7b67efcaf4dc80d0aebe34f787a46b840

moving build instructions from wiki to devguide doc directory [1/1]
making title more website friendly
Update devtool-build.md
Updated download location to point to Sourceforge