Merge pull request #16 from enviroCar/dev

Dev
Added exception for tracks that are too long...

... for exporting.
Implmenented check for too long tracks...

... for shapefile export.
Created tests for shapefile export
Corrected c&p mistake
Fixed tests
Changes according to discussion:...

...
https://github.com/enviroCar/enviroCar-server/pull/195#discussion_r14128939
Added information about limit for shapefile...

... export to docs,
Merge pull request #197 from bpross-52n/addExportLimitToDocs

Added information about limit for shapefile export to docs.
add R example and some more headlines to additional encodings documentation
Merge pull request #196 from bpross-52n/issue-194

Issue 194
Merge branch 'dev' of https://github.com/enviroCar/enviroCar-server into dev
fix bugs in markdown file
add image for docs
Merge pull request #198 from nuest/dev

add R example and some more headlines
Merge branch 'dev' of https://github.com/enviroCar/enviroCar-server into dev
adjust exception to provide the count of the actual track
make test for shapefile encoding independent from db state
remove provided export.properties