[processing] Add crs selection panel to scripts
[composer] Fix crash when removing item group
Option to remember selected datum transformations
don't crash when transforming between the same CRSes and update map renderer sip bindings
fix moc warning
don't use infinite in spatialite where clauses
[processing] R improvements

This commit:

Deletes Example scripts

Replaces Example scripts with more up to date versions

Adds general categories for r scripts: Basic statistics, Vector processing, Raster processing and Point pattern analysis

adds help files to all r scripts

Adds a groups of r scripts entitled Home range analysis, that includes Kernel href, LSCV Kernel, Minimum convex polygon, single linkage cluster analysis and characteristic hull method, using adehabitatHR()

Adds the following R scripts contributed by Yury Ryabov ( riabovvv(at)gmail.com ): Advanced raster histogram, Monte carlo spatial randomness, Relative distribution (distance covariate), Relative distribution (raster covariate),
[georeferencer] does not ask for output file when word file checkbox is checked
- restore settings for word file checkbox
[georeferencer] change add raster icon to be consistent with the main app theme
[globe] Make OSG_PLUGINS_PATH CMake option functional on Mac
Merge pull request #986 from p0cisk/processing_crs

[processing] Add crs selection panel to scripts