fixes #1949 - VMware creation: vm's always get 768MB memory

I've removed the select box too, and would add a slider in a later commit

refs #1944 - minor leftover to avoid Object.id warning

fixes #1944 - Listing VMWare virtual machines under Computer resources is slow.

fixes #1814 - converts sp_* attributes into a BMC interface class

this patch also includes the following

• added a new interfaces table, and STI objects to represent a NIC, BMC, Managed
  and a bootable interface.
• refactored DHCP/DNS orchestation code, so they can work on the...

puppet class form ui fixes.

Fixes #2050 - Don't display revoked certs by default

fixes #1965 override value to textarea

Fixes #2046: Only show the inverse taxonomy tab if enabled

fixes #2042 - fix CSS classes added to filter levels

scope templates by taxonomy.