Bug 5670: [QA Followup] Create housebound roles table.

Bug 5670: [QA Followup] Create housebound roles table.

* installer/data/mysql/atomicupdate/housebound_tables.sql (housebound_role):
  New table.
* installer/data/mysql/kohastructure.sql (housebound_role): New table.
* installer/data/mysql/en/mandatory/auth_values.sql: Remove HSBND_ROLE entries.
* installer/data/mysql/en/mandatory/patron_attributes.sql: Remove
  HSBND_ROLE entry.
* installer/data/mysql/en/mandatory/patron_attributes.txt: Remove
  explanatory text.

Signed-off-by: Claire Gravely <claire_gravely@hotmail.com>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>