no functionality, just cloned the Lfp display

This reverts commit 46a11aba, reversing
changes made to 02637b37.

0.0 = Cosyne 2012
0.1 = SfN 2012
0.2 = alpha release
0.3 = beta release
1.0 = the REAL DEAL?

It's unused, declared obsolete, and is triggering GCC warnings. If
anyone wants it back, it'll be in the Git history.

Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>

updated the project build configs to include the SpikePlot.cpp and .h files and exclude the previous plotters

The waveform icons should be made a bit thicker, but otherwise these look cool.

If continuous channels are toggled for recording within their respective editors,
a "writeContinuousBuffer" function will be activated within the RecordNode. This
function doesn't do anything yet, but it will make it easy to add diskwriting
capabilities in the near future. Once a stable format for events has been established,
a similar function will be implemented for writing event buffers to disk.