Major refactor commit

* KATCP server now runs without using multiprocessing.
* Added a checkpid() script to look to see if bpsr or another version of hipsr-server is running
* Basic support for different 'flavours' e.g. 200_16384 and 400_8192
* script now prints current RA/DEC (bug introduced during major changes)
* test script now longer to test more things
* removing 'erroneous' line