ErrorSim: 
1) Changed the levels of output in the system to Silen, Verbose, Debug
with debug being the previous level verbose. Verbose is now used for a
cleaner output for marking and such.
2) Added UI to allow change for the level. Default is Verbose

ConnectionManagerESim: 
1) Program wide formatting change to encorporate the different levels of
system prints. 
2) Minor fixes to Lost Operation and Normal Operation in the way they
behave when they receive a final packet. Testing to ensue
Merge branch 'master' of https://github.com/sysc-3303-1000000/TFTP