Improve human readability for catalog errors. [#62854062]
Ensure fields in error messages refer to catalog field names as opposed
to db field names

[finishes #62854062]
Fix quotes

Signed-off-by: Michael Maximilien <maxim@us.ibm.com>
Add thread info to /varz

[#64680726]

Signed-off-by: Michael Maximilien <maxim@us.ibm.com>
Refactor spec for clarity

  * we now check instant setting of /varz data apart from deferred tasks

Signed-off-by: Michael Maximilien <maxim@us.ibm.com>
Fix quotes

Signed-off-by: Michael Maximilien <maxim@us.ibm.com>
Extract rack app building

So we can change it test-first [#64688246]

Signed-off-by: Eric Malm <emalm@pivotallabs.com>
Separate global config from rack app building

Looks like they were accidentally coupled [#64688246]

Signed-off-by: Eric Malm <emalm@pivotallabs.com>
Fix quotes and formatting

Signed-off-by: Michael Maximilien <maxim@us.ibm.com>
Refactor to be more explicit