GitLab

- remove 'using namespace' from header files
- remove 'using std::string' and 'using std::abs' from header files

For reason see:
o http://stackoverflow.com/questions/5849457/using-namespace-in-c-headers

A loss LossDataSink is initiated with the constructor, then particles are added (and locally stored).
In the finalize method all data is written to an ASCII or H5 file, depending on the NEW option ASCIIDUMP.

Testing of this is ongoing, there are maybe some gliches, watch out. 

Regressiontest will follow!

@Yianjun: please test the CYCLOTRON related PROBES and STRIPPER element!

calculate the momentum kick directly from the difference of gamma during gap-crossing in rf cavity, rather than the logarithmic differential expression

		MINR, MAXR, MINZ, MAXZ. 
- if a particle is out of cyclotron aperture or out of the field map, 
   it will be deleted after this step and its parameters are recorded in the *.loss file
- change data type of particle id from int to size_t
- many minor cosmetics of display massage

Change the arguments of CCOLLIMATOR element to XSTART, XEND, YSTART, YEND, WIDTH so as to model non-radial oriented collimator

- use forward declaration where possible
- remove unused includes

fix the mass in *.loss file with more than one plugin element case (open/close the file just before / immediately after data dump)

- Dump the info of stripped particle to the shared *.loss file, rather than an separated *.extract file; \n - Dump the turn number and time for the probed or stripped particle