WGIS WFS Server : GeoJSON Fid has to be a String

Adding "\"" befaore and after the fid for the GeoJSOn format.
Followup to be3bad3

- Simpler means of bringing composer windows to front, if manager dialog is going to be closed
Fix duplication of main app's Window and Help menu to composers for Mac
adding some function help files for field calculator, thanks to Zoltan Siki
Remove namespace prefix from typename in QgsGml
Some wfs servers don't like srsname in DescribeFeatureType request (ticket #5241)
german translation update
block vector layer signals when updating attribute values from field calculator (fixes #7190)
da60fe fixes #7071
Merge pull request #433 from 3nids/pg_hstore

added hstore and inet fields to postgres provider
Fix #6184, canvas doesn't refresh after pasting layer style
Replace saving done dialog with message bar
adding some licenses and copyrights to sextante
small help file change
[sextante] changed saga cmdname method and modified merge raster algorithm description
[sextante] commented out loadfromDict method
[sextante]Improvements in batch processing interface and in the simplified toolbox organization
[sextante] changed statisticByCategories, so now it does not depend on external libs
[sextante] added new modeler-only tools
[sextante] changes in R interface