Bugfixes, dictionary fatal error

[vkbo]

Fixes an issue with the spell language setting being "none" triggering a fatal error on next load. Added a try/except to the loading itself.

[codecov-io]

Codecov Report

❗ No coverage uploaded for pull request base (master@0a7bc22). Click here to learn what that means.
The diff coverage is 75%.

@@            Coverage Diff            @@
##             master      #47   +/-   ##
=========================================
  Coverage          ?   74.96%           
=========================================
  Files             ?       29           
  Lines             ?     4757           
  Branches          ?        0           
=========================================
  Hits              ?     3566           
  Misses            ?     1191           
  Partials          ?        0

Impacted Files	Coverage Δ
nw/config.py	93.01% <75%> (ø)

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