Added class to simplify working with I/O variables in slick grid.
Finished modifying component and grid for selenium. _test_editable_inputs is skipped instead of commented out.
Merge remote-tracking branch 'upstream/dev' into selenium-variable-viewer
Added test for accessing io variable cell values by column name.
Added controls to change behavior of component editor.
Merge remote-tracking branch 'upstream/dev' into selenium-variable-viewer
Merge pull request #1318 from crobinsonut/selenium-variable-viewer

Updated ComponentPage