SciDAVis - Improvements SVN-temp

- Fixed setting of plot designation in Table.importASCII().
- QPrinter constructor is expensive, particularly on systems where this triggers
a network scan for available printers. We definitely don't want to do this on
every ApplicationWindow initialization (i.e., application start, new project
and open project) just to get a default export resolution. Having this depend
on the settings of the printer that happens to be default /on the first
application start/ (value will be taken from settings subsequently) is insane
anyway, regardless of performance penalty.
=> changed to hard-coded default of 72 dpi

- tagging version 0.2.2

- prepared release 0.2.2

- Improved Table::importASCII() to behave more like the version in SciDAVis 0.1.x.

- Fixed crashes when using newMatrix(), newTable() and newNote() from Python scripts with
Python 2.6. Apparently, the problem doesn't occur with Python 2.5, although the exact conditions
leading to a crash still need to be pinned down. Fixes bug #2686283.

- implemented Table::importASCII to be used by Python
(partly fixes bug #2686283)

- Fixed collaboration between range selection and other plot tools. Closes bug #2738298.
- Fixed annoying compiler warning in Script.h.

- Fixed excessive triggering of Column::dataChanged(). Closes bug #2676036.

- Fixed a small bug in MuParserScript rewrite (column functions can't be optimized, because they implicitly depend on i).

- Fixed legend display when creating a new function plot (closes bug #2714731).
- Fixed entries of function curves when creating a new legend.