fixes #2933 - add missing fields to installation media API

fixes #863 - added ldap_filter to LDAP auth sources to filter lookups using RFC 2254 filters

fixes #2791 - ptable api was missing :layout and :os_family

fixes 2228 json parsing failed

Revert "ptables - displaying os_family and layout in api show and list"

This reverts commit ed315bd9449dc7fa11cf0a32ef195c1795197cc3.

ptables - displaying os_family and layout in api show and list

Using Apipie versioning features and Maruku for markdown

Apipie switched from Redcarpet to Maruku to avoid crashes of the C
Extension. No further need of compiling anything to get markdown support.

Extended information for each type of compute resources

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...

added template_kinds controller to api