Updating Korean translation
Czech translation

added complete czech translation
Small fixes

Small fixes in the meaning of words "issues"...
Remove ambiguous entries in Italian translation

The Italian translation is using "cancella" to translate various English terms like "cancel", "delete", "clear" o "un-something", this is confusing if some of these terms are used near each other (e.g. two buttons "cancel" and "delete").

See issue https://github.com/github/android/issues/498
Fixed Greek Translations
Added Swipe-to-Refresh
Clarified the 2FA toast error message
Added missing strings for the Swedish language and corrected misspellings
slovak locale updated

Signed-off-by: Adrian Matejov <a.matejov@centrum.sk>
Merge pull request #620 from iKotsos/GreekTranslationFix

Update Greek translation
Merge pull request #630 from Dajo90/swedish-translation

Update Swedish translation
Merge pull request #629 from Dajo90/2FA-toastmessage

Add a more clear message to the 2FA toast error
Merge pull request #631 from Adman/slovak

slovak locale updated
Merge pull request #619 from iKotsos/Swipe2Refresh

Add swipe-to-refresh to list items
Fix indentation and space
Merge pull request #632 from fadils/Fix-indentation

Fix indentation and space
Merge pull request #499 from kappa7194/patch-1

Remove ambiguous entries in Italian translation
Merge pull request #488 from TomasValenta/patch-1

Add Czech translation
Merge pull request #462 from minsOne/master

Updating Korean translation