[Fix] offline notification text

[wbrtm]

Fixes the current offline notification string resulting in something like
OfflineRetrying in ... 5 seconds
to
Offline. Retrying in 5 seconds.

Will require adoption by translators before it shows.

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Use the following Checklist if you have changed something on the Backend or Frontend:

• Tested the feature and it's working on a current and clean install.
• Tested the main App features and they are still working on a current and clean install. (Login, Install, Play, Uninstall, Move games, etc.)
• Created / Updated Tests (If necessary)
• Created / Updated documentation (If necessary)

[arielj]

should we also update the translation files? since this is used as reference for more accurate translations

one concern I have is that the leading . could be a bit weird for translations without much context. maybe we have to refactor this a bit to be a complete string Offline. Retrying in {{seconds}} seconds. and then use 2 different keys (one for just Offline and one for Offline. Retrying...)

[wbrtm]

Although I saw translation projects where such strings were common and translators seemed to have no problem to adopt, I thought about the same fixing this. I will add another commit, should be the cleaner solution.