Cherry-pick images-related commits from release-0.3.

* Added ability to filter Murano images by type
  I17fe8aa92d7623a1236df7d4f6036ee84f5a7e5a
* Fix issue with name in metadata
  I841f75ec21365d8aec73b789c83a33d242b84850
* Different issues with image metadata forms
  Fixed different small issues with forms related
  to marking images with specific Murano metadata
  Resolved Bug #1236262
  I0a4f6c7034c76c6b7a591e26b0df5f9f29ad782d
* Added ability to use own title for image
  I2ab9198c57aba9e55c7cba9f043d2d4dc4af3a63
* Added image filtering to existing services
  I6cb8125b2ca2906f02096645c6eac4882e25c46a

Change-Id: I65e31b6b75ad5b15d0488de9ddd16b4d2a12f6ae