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Simplified axisAuto and axisLimits. Added axisLabels.
- axisAuto and axisLimits now take figure name as argument.
- the "view" message has been replaced by a "set" message for the
"viewbox" property.
- axisLabels enables to set axis labels
Figures now read axes names from scene.
Small modifications to all_commands.cpp
Merge pull request #57 from dvinc/master

Improved axis control, implemented axisLabels. Breaks compatibility with "view" messages.