Table to new tab, creates GeoRectangle convenience class, dprint()

Moved Table class to new Tab, for convenience. Routed all the println()
to console from the sketch to dprintln() method, which would allow to
disable output to console via boolean variable
DISABLE_DEBUG_CONSOLE_OUTPUT. In Chrome printing many lines to console
slows down sketch loading by 3-5 seconds. Also created GeoRectangle
class for convenient storage of the rectangular "bounds" of the points.
(These bounds are used in geoToPixels() method)
tidied up.

removed unused comments, variables.
fixed bug which would happen if CSV file has comment or empty line. Removed setters.

The array resizing wasn't used correctly, and I have changed data
structure from two-dimensional array to ArrayList.
Also removed setters, as they didn't make sense in current
implementation.