SciDAVis - Improvements SVN-temp

- tagging version 0.8.6-2

- Fixes export of 2D plots.
- Fixes a minor bug: modifications of the columns width in tables via mouse dragging sends a notification signal to the main app.
- Improves automatic search for updates.

- applied Patch #1258 (submitted by Mohamad Al-Saqer)
which adjusts the project files to compile correctly
on 64bit linux systems

- closing obsolete "0.8.4_symbols" branch

- tagging version 0.8.6

- Fixed initialization of the legend text and background color, bug reported by Tilman

- fixed several bugs in AxesDialog

- updated the German translation
- fixed some typos
- converted all source files with mixed end line
characters to pure DOS style line endings

- Fixes bug in 2D plots duplication (linked to the legend marker ID).
- Adds a FunctionCurve class for better handling of this type of 2D curves.
- Adds the possibility to move the error bars attached to a BarCurve having a non-zero offset together with the bars.
- Adds the possibility to specify X/Y Error columns.

Added a zoom out tool button.