Testing files

Added all the testing files on both the client and server side. 128k is
a big file with 269 blocks
Merge branch 'master' of https://github.com/sysc-3303-1000000/TFTP
Merge branch 'master' of https://github.com/sysc-3303-1000000/TFTP
Merge branch 'master' of https://github.com/sysc-3303-1000000/TFTP
ConnectionManagerESim: 
1) Changes to allow different IP's to work

ErrorSim:
1) Imrpoved UI to allow user to enter in their preferred IP
Merge branch 'master' of https://github.com/sysc-3303-1000000/TFTP