Improve feedback message when JSTD.conf isnt valid

[andy-berry-dev]

I was editing a JsTestDriver.conf file to debug a test and rather than using 4 spaces I used a single tab.

The tests don't run and the output I get is:

Testing presenter (ATs):
Unexpected Exception:


- Time Taken: 0secs
Error:
  Test failure or error while running tests.

Stack Trace:
org.bladerunnerjs.model.exception.command.CommandOperationException: Test failure or error while running tests.
    at com.caplin.cutlass.command.test.testrunner.TestRunnerController.run(TestRunnerController.java:142)
    at com.caplin.cutlass.command.test.TestCommand.doCommand(TestCommand.java:51)
    at org.bladerunnerjs.model.utility.CommandRunner.run(CommandRunner.java:21)
    at org.bladerunnerjs.model.BRJS.runCommand(BRJS.java:277)
    at org.bladerunnerjs.model.utility.UserCommandRunner.run(UserCommandRunner.java:25)
    at org.bladerunnerjs.model.BRJS.runUserCommand(BRJS.java:282)
    at org.bladerunnerjs.CommandRunner.run(CommandRunner.java:77)
    at org.bladerunnerjs.CommandRunner.main(CommandRunner.java:39)

org.bladerunnerjs.model.exception.command.CommandOperationException: Test failure or error while running tests.
    at com.caplin.cutlass.command.test.testrunner.TestRunnerController.run(TestRunnerController.java:142)
    at com.caplin.cutlass.command.test.TestCommand.doCommand(TestCommand.java:51)
    at org.bladerunnerjs.model.utility.CommandRunner.run(CommandRunner.java:21)
    at org.bladerunnerjs.model.BRJS.runCommand(BRJS.java:277)
    at org.bladerunnerjs.model.utility.UserCommandRunner.run(UserCommandRunner.java:25)
    at org.bladerunnerjs.model.BRJS.runUserCommand(BRJS.java:282)
    at org.bladerunnerjs.CommandRunner.run(CommandRunner.java:77)
    at org.bladerunnerjs.CommandRunner.main(CommandRunner.java:39)

This needs improving to atleast say there was an error parsing the config file or just print out the JSTD error output.