Fixes error messages in read_json.py
Updates data URLs in mta examples

Retrieved the stationlocations_dict.json from a cache file and uploaded
it to vgchead so that it doesn't break again (original was from Wall
Street Journal and is now 404).
Adds Sandy parameter exploration to mta-yankees.vt
Mark invalid parameters in parameter view

gui/modules/constant_configuration.py:
  - StandardConstantWidget.contents:
    Mark invalid parameters with dashed yellow border and
    show conversion error in tooltip.

Ticket: 898
Show workflow info when no module is selected

Also renamed:
"Properties" -> "Workflow Info"
"Module Information" -> "Module Info"

gui/module_info.py:
  Set title to "Module Info"
 - update_module:
   Show workflow info when no module is selected, both are docked, and
   one of them is visible.

gui/version_prop.py:
  Set title to "Workflow Info"

fixes #15
Fixes three (3!) NameErrors in tabledata
Removes unused variable
Correctly handles allowDefault -> allow_default
Merge remote-tracking branch 'dill/master'