[AESH-249]
make sure that Resource converter is added to the manager
fix bug in filelister
must add process to the list before executing it or it might be added after the command has finished and cause æsh to believe that we're running a command although its already finished.
optimize finding backslash at end of line + cleanups
[AESH-249]
fixes bug in redirection, appending still doesnt work properly
fix bug when history doesnt show the correct line caused by optimizing when delta is -1