Various fixes as a follow-up to the Sprint 1 demo.  Restrict attachable volume choices to the same availability zone as the instance.  Add labels to volumes landing page.  Stay on security group page after modification to be consistent with other detail pages.
Merge pull request #21 from eucalyptus/demo_followup

Various fixes as a follow-up to the Sprint 1 demo.
Change default label/field proportions to 4:8 rather than 3:9, since only the security group detail page needs the 3:9 ratio.
Fix error on Create Security Group page.  Other minor fixes for layout on security groups add/edit form.
Initial progress on volume detail page.  Allow tags to be updated.  GUI-46
Allow volume creation.  GUI-46
Implement smart refresh when a volume is in a transitional state.  Implement volume deletion, displaying notice when deletion succeeds.  Link to instance on volumes landing page for volumes that are attached to an instance.  GUI-46
Display snapshots for a given volume, and allow a snapshot to be created for the volume. GUI-46
Fix padding for tile content when lines wrap.  Link to volume for each snapshot on snapshots landing page.
Display progress bar when creating a snapshot from a volume.  GUI-46
Link to volume from snapshots landing page table view.  Better handling of route lookup failure.  GUI-46
Allow snapshot deletion from the volume snapshots page.  GUI-46
Display snapshot size for snapshot choices in create volume form.  Auto-populate volume size from snapshot size if creating volume from snapshot.  Allow AngularJS attributes to be passed to form_field_row helper snippet.  GUI-46
Minor fixes for form field and validation feedback layout.
Add help text for tag editor and display on volume detail page and other detail pages with tag editing enabled.  GUI-46
Allow a volume to be attached to or detached from an instance.  Implement SmartRefresh for volume if vanilla status or attach status in a transitional state.  GUI-46
Display attach_data status when possible for volumes on landing page. GUI-46
Display number of snapshots for a volume and link to the volume’s snapshots on the volumes landing page.  GUI-46
Make entire tile header link clickable on landing page tile view.
Various fixes for creating a volume.  When creating from a snapshot, we must pass a snapshot object rather than the snapshot id.  Also properly add tags during volume creation.