Fix untranslatable strings

[cheack]

While working on the Russian translation, I noticed that some strings never appeared translated.

In a previous discussion, one of these strings (No apps to update here!) was pointed out as already translatable - but it was actually using $'...', so it was never being translated.

This PR replaces $'...' with $"..." for all strings that are intended to be localized, and adds the corresponding translation entries for all supported languages.

[cheack]

I also noticed a multi-line output block in _install_sandbox_script (sandboxes.am) that uses the same pattern, but left it out of this PR - it's split across many small printf calls for ANSI color formatting, and translating those tiny fragments in isolation didn't seem right.

[ivan-hc]

AM-INSTALLER does not uses translations... but no matters.

[ivan-hc]

I also noticed a multi-line output block in _install_sandbox_script (sandboxes.am) that uses the same pattern, but left it out of this PR - it's split across many small printf calls for ANSI color formatting, and translating those tiny fragments in isolation didn't seem right.

Some blocks are a mess.

When translation support was added, $ were added wherever was available a message, or a echo or printf, without considering the possibility of made those messages even shorter and less complicated to translate.

Actually AM has hundreds of lines, containing ASCII characters and symbols.

I would made them easier to translate... but I don't want to overwrite already existing translations of other users.

[ivan-hc]

Man, you did an amazing job. Congratulations!

[cheack]

Haha, thanks!

[ivan-hc]

@cheack I don't know what's happened but I had to fix some lines containing quotes that were marked as invalid due to mismatches between original and translations

2844fba

For example, if the original had ", the translation had not " escaped.

Maybe because they were in single quote before, and you fixed the original, and not thee translation.