Replace or fix randomname

[alahiff]

The randomname module gives errors on some systems (CSD3): try to replace it with something else (or work out what's wrong and submit a fix).

[alahiff]

Example:

  File "/home/ir-lahi1/simvue/client-main/simvue/run.py", line 209, in init
    name = randomname.get_name()
  File "/home/ir-lahi1/simvue/client-main/venv/lib/python3.9/site-packages/randomname-0.1.5-py3.9.egg/randomname/core.py", line 13, in get_name
  File "/home/ir-lahi1/simvue/client-main/venv/lib/python3.9/site-packages/randomname-0.1.5-py3.9.egg/randomname/core.py", line 7, in generate
  File "/home/ir-lahi1/simvue/client-main/venv/lib/python3.9/site-packages/randomname-0.1.5-py3.9.egg/randomname/core.py", line 8, in <genexpr>
  File "/home/ir-lahi1/simvue/client-main/venv/lib/python3.9/site-packages/randomname-0.1.5-py3.9.egg/randomname/util.py", line 208, in choose
  File "/usr/local/software/spack/spack-git/opt/spack/linux-rhel7-broadwell/gcc-5.4.0/python-3.9.6-sbr552hsx3zanhgi3ekdjp4rsn6o6ejq/lib/python3.9/random.py", line 346, in choice
    return seq[self._randbelow(len(seq))]
IndexError: list index out of range

[alahiff]

Implemented in #34

Offline mode required lots of changes, as the name was used to determine the directory name.