Fixes glance_url to use a string, not a text field

This updates db/seeds.rb only, without a migration. But since we're
updating before the release, there should be need for one.

It turns out that :type => 'text' gives you a textarea...

Closes https://github.com/aeolusproject/conductor/issues/335
Delete a bunch of old images

These are only images that I was >99% sure we did not need. There
are probably still some random graphics lingering around, but I
think I got the bulk of the obviously-orphaned ones.
Purge all things iwhd
added asset specific configs
moved stylesheets into app/assets, added stylesheets for precompilation in production
Merge pull request #356 from n1zyy/issue335-glance_url_huge

Fixes glance_url to use a string, not a text field
fix cost est. for instance, fixes: #359
Merge pull request #360 from martinpovolny/cost-rhevm2

fix cost est. for instance in some cases (rhevm)
BaseImages#show shows provider accounts whether or not images are built

This fixes a bug where the BaseImage detail page would only show the
available provider accounts if they had an image built.

Fixes https://github.com/aeolusproject/conductor/issues/306
Switch providers#edit with providers#show
Switch providers#edit with providers#show - fix tests
Delete provider toggle
Delete provider toggle - fix tests
Merge pull request #358 from n1zyy/old_images

Delete a bunch of old images
Merge pull request #366 from ifarkas/providers_refactor

Providers page refactor: switch providers#edit with providers#show
fix typo in error handling in deployables
Merge pull request #368 from martinpovolny/fix-error-handler

fix typo in error handling in deployables
use compass-rails and sass-rails and haml-rails gems, compass config is no more needed

added alchemy as gem from rubygems
added gems for precompiling the assets
Updated Gemfile.lock with only neccessary changes to avoid failing tests
moved images and javascripts into assets folder, created js manifests, updated application and login layouts
moved jquery-ui stylesheets to vendor/assets, moved image from public/images to app/assets, removed converge-ui folder