boolean widgets in the SQLFORM.grid search widget should be "off" if unchecked.
consistent quotes
timeout = 0 leads to erratic behaviour. Allowing timeout = 0 is considered unsafe
Use 'True' and 'False' for booleans
Merge pull request #546 from niphlod/fix/scheduler

timeout = 0 leads to erratic behaviour.
Merge pull request #547 from timrichardson/issues/2017

Issues/2017