Can request that elapsed time information is added to tables.

The setting applies to this and subsequent storytests (until it's changed), so it can be set at a suite level (eg, in ''!-SuiteSetUp-!'').

The timing information is in milliseconds.

The timing information has a tooltip which gives date/time information. 

|''runtime configuration''|
|''add timings''|true|

|''start stop watch''|

|''stop watch''|<|200|

|''sleep for''|20|

|''stop watch''|<|200|

|''sleep for''|100|

|''stop watch''|<|200|

|''runtime configuration''|
|''add timings''|false|

|''stop watch''|>|100|
