remove TissueCyte class

[raacampbell]

We no longer use the TC class because our microscope was converted to BakingTray some time ago. It would clearer, therefore, to simply remove this code and refactor everything.

[raacampbell]

Done: 214a21e
We still have the BakingTray version of generateTileIndex in there, even though we no longer need these files. They should be phased out in due course.

[raacampbell]

Remove readTileIndex, as the BakingTray tile index files are just empty anyway. c89379c

We really want to be able to remove all traces of the current tile index array and replace it with a structure that is easier to read. To do this I have to disentangle what is happening in preProcessTiles. For now we return stage positions as a third output of tileLoad 74bb94c Eventually we will have just two outputs, with the the second being a structure.

[raacampbell]

Issue #18 is now closed. We have removed the objectives and mics per pixel stuff from the INI file that was TissueCyte-specific.