Remove special chars from localization

[fnagel]

• Rebase and merge Datepicker: removed arrow symbols from next and previous month hovertext in swedish #2050 branch
• Remove all missing prefixes/suffixes
• Remove all left symbols
• Make sure there are no empty texts, create localization by using Google Translate (and verified by another)
• Update related issues
  • Datepicker, Next month button tooltip encoding issue? #2048
  • pt-BR language file fixed #1900
  • Datepicker: removed arrow symbols from next and previous month hovertext in swedish #2050

[mgol]

LGTM. Just one question: do we want to merge #2050 separately before this one to preserve the original author of that change?

[fnagel]

@mgol We can do this but another (maybe more easier option) would be to just go ahead and merge all three commits of this PR without squashing them to one. I would prefer the latter one.

[mgol]

@fnagel ok, that works for me. The only caveat is you should amend the last commit manually to add Closes gh-2100 to the commit message as using Rebase and merge doesn’t let you modify the message when merging and we’d lose the link to this PR.