null and isEmpty check added, this way no non-i18n nodes are not adde…

[johanruttens]

…d to the list of language codes + some automatic code formatting

[codecov]

Codecov Report

Merging #3 into master will decrease coverage by 0.44%.
The diff coverage is 85.71%.

@@            Coverage Diff             @@
##           master       #3      +/-   ##
==========================================
- Coverage   57.48%   57.03%   -0.45%     
==========================================
  Files           6        6              
  Lines         127      128       +1     
  Branches        9       10       +1     
==========================================
  Hits           73       73              
  Misses         51       51              
- Partials        3        4       +1

Impacted Files	Coverage Δ
...etpack/dictionaryactivation/models/Dictionary.java	93.18% <85.71%> (-2.17%)	⬇️

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