Rename AppStream metadata file to a rDNS format

[AsciiWolf]

Also:

• Set the component type to desktop-application instead of a deprecated desktop one.
• Update data/po/update_desktop_file_appdata.py + add the previously added launchable type there.

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Follow-up to the previous PR.

While non-rDNS app IDs still work, they are considered deprecated and not recommended to use.

Please note that after this PR gets merged, it will be necessary to re-generate the pot file / po files.

/cc @CodingJellyfish

[AsciiWolf]

https://www.freedesktop.org/software/appstream/docs/chap-Metadata.html#tag-id-generic

The ID must follow a reverse-DNS scheme, consisting of {tld}.{vendor}.{product}, for example org.kde.gwenview or com.hugski.colorhug2. Ownership of {vendor}.{tld} in the domain name system guarantees uniqueness of IDs.

To increase the uniqueness and to distinguish between different pieces of a software suite, it is suggested to append the type name to the component-id in these cases.

(Do not worry about the previous sentence about lowercase letters. Even GNOME uses a mix of lowercase and uppercase for app IDs and there are no problems with it.)

[AsciiWolf]

Any news (or at least a review)?

[qwertychouskie]

Looks good to me, @CodingJellyfish feel free to merge.

[AsciiWolf]

@CodingJellyfish Ping. If there is any problem with this PR, please let me know. Thanks!

By the way, don't forget to re-generate the pot file / po files after this PR gets merged.

[deveee]

Don't you think that pinging so many people so often isn't abusive behavior?

[AsciiWolf]

Don't you think that pinging so many people so often isn't abusive behavior?

Maybe a little. On the other hand, do you think that completely ignoring this PR for almost two months (and even ignoring the review from another contributor) is a proper behavior?

If you want to keep ignoring this PR, please at least fix the bug in your update_desktop_file_appdata.py script (fixed as part of this PR) that is currently missing the launchable tag and will damage the AppStream metadata file the next time it is launched.

[qwertychouskie]

Don't you think that pinging so many people so often isn't abusive behavior?

Pinging once when opening the PR and once after 1.5 months is hardly what I would consider excessive. (And the one other ping was me.)