Add NERD dev key into the gerbil.properties file
Merge branch 'master' of github.com:AKSW/gerbil

Conflicts:
	src/main/resources/gerbil.properties
add the nerd4java client
add NERD Annotator to GERBIL
use of ProblemReduction to transform the Sa2W to D2W annotation
Add Datahub datasets various changes

The connection to datahub is established.
Datasets with the following properties will be available in gerbil:
* nif tagged
* end with .ttl
* ends NOT with dataid.ttl
* less than 20Mb

Currently the Datahub loader is no static instance.
The first time the website will be loaded the dataset names and
path to the files will be loaded.
Every time the experiment starts the information would be loaded.
This should be fixed if the 'springify' (ref #22) is done.

Removed the background loading of the tomcat (in start.sh the &).
So the tomcat is easier to stop.

Add a file logging. All log messages will now be add to the file
gerbil.log (should be set to .gitignore)

Currently there is a bug in the filepath where the nif datasets should
be written to. The path would not load properly from the
GerbilConfiguration and I did not found the problem. I will open an
issue for that.

fix #10
implement test for the NERD adapter
add NERD API property to the property file
update NERD annotator, and make it resilient to long texts
Adds FOX binding.
Fox implementation of the A2WSystem interface.
Merge branch 'master' of github.com:AKSW/gerbil
Update .gitignore
FOX fix, add all entities.
Merge branch 'master' of github.com:AKSW/gerbil
Added an empty gerbil_keys.properties

refers to #29
Created a better solution for the gerbil_keys.properties problem. The start.sh creates an empty file if it doesn't exist. This prevents git from trying to upload the file if it is added to the .gitignore file.
Sorry, in my last commit some lines of the start.sh were commented out. I Fixed this.
Fixed an error inisde the MatchingFactory causing problems with C2W experiments. Refers to issue #30.
Added a better error handling to the NERDAnnotatorConfig.