Actions: add default/sample/templates

[qgib]

Author Name: Paolo Cavallini (@pcav)
Original Redmine Issue: 5127

Redmine category:gui

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It may be intimidating to start writing actions. It would be much easier if we would add some sample actions readymade in the interface. Examples:

python:

from PyQt4.QtGui import QMessageBox; QMessageBox.information( None, "test", "coords = ( [% $clickx %] , [% $clicky %] )
layerid = [% $layerid %]" )

Also, more details should be added to Help button

[qgib]

Author Name: Giovanni Manghi (@gioman)

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• assigned_to_id removed Giovanni Manghi

[qgib]

Author Name: Diego Mo (Diego Mo)

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So far I have used actions in this three ways

Windows type
Open program (browser)
"PATH_PROGRAM" "URL"

Python type
Add Raster Layer
qgis.utils.iface.addRasterLayer('PATH_FILE','NAME_FILE_IN_QGIS')
Add Vector Layer
qgis.utils.iface.addVectorLayer('PATH_FILE','NAME_FILE_IN_QGIS', 'ogr')

I like the way was developed the grass plugin to help users to build the command line (choice of the function, required parameters, optional parameters, opportunity to consult the relative guide to include additional parameters not included in the first choice).
Do you think it makes sense to replicate this approach also to the interface of the actions?

[qgib]

Author Name: Giovanni Manghi (@gioman)

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• fixed_version_id was configured as Version 2.0.0

[qgib]

Author Name: Nathan Woodrow (@NathanW2)

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Added in 1786b96

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• resolution was changed from to fixed
• status_id was changed from Open to Closed