Remove vestigial CREATE statement

Signed-off-by: Dan Scott <dan@coffeecode.net>
Enable agent_statuses and reports tables

The agent_statuses table was being created three times; refactor to
create the table definition once and then use INSERT...SELECT to
populate it once.

HSTORE DEFAULT '{}' was failing on PostgreSQL 9.2.4, but HSTORE DEFAULT
NULL seems much happier.

Signed-off-by: Dan Scott <dan@coffeecode.net>
Add full-text examples for agent reports

Add TEXT and corresponding TSVECTOR columns to the reports table to
support full-text search of agent reports, along with a trigger to
automatically populate the TSVECTOR column, a GIN index on the TSVECTOR
column to provide performant search, and some sample data. More sample
reports needed!

Signed-off-by: Dan Scott <dan@coffeecode.net>
merge agent report improvements from dan scott