fix(core): rename i18n to translater & fix few other issues

[ghiscoding]

• fix couple of issues found for the lib to work with Aurelia-Slickgrid

[codecov]

Codecov Report

Merging #174 (500a61d) into master (38414a1) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##            master      #174   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          200       200           
  Lines        11684     11687    +3     
  Branches      3980      3981    +1     
=========================================
+ Hits         11684     11687    +3     

Impacted Files	Coverage Δ
packages/common/src/formatters/formatters.index.ts	100.00% <ø> (ø)
packages/common/src/editors/dateEditor.ts	100.00% <100.00%> (ø)
packages/common/src/editors/longTextEditor.ts	100.00% <100.00%> (ø)
packages/common/src/editors/selectEditor.ts	100.00% <100.00%> (ø)
packages/common/src/enums/index.ts	100.00% <100.00%> (ø)
...common/src/formatters/translateBooleanFormatter.ts	100.00% <100.00%> (ø)
...ckages/common/src/formatters/translateFormatter.ts	100.00% <100.00%> (ø)
packages/common/src/services/grid.service.ts	100.00% <100.00%> (ø)
packages/excel-export/src/excelExport.service.ts	100.00% <100.00%> (ø)
packages/file-export/src/fileExport.service.ts	100.00% <100.00%> (ø)
... and 3 more

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