Add title and description to tags and tag pages

[askvortsov1]

No description provided.

[askvortsov1]

This fully covers #119, which can probably be closed if this is accepted.

[luceos]

@askvortsov1 linking issues/pr's can only be done from the body (not the subject) unless it's in the same repo (I think), so: flarum/tags#72

[askvortsov1]

@askvortsov1 linking issues/pr's can only be done from the body (not the subject) unless it's in the same repo (I think), so: flarum/tags#72

Thanks!

[franzliedke]

Thank you!

Please include at least the context of what you're changing in the PR title. Cross references can go in the description. 🙊

[askvortsov1]

Thank you!

Please include at least the context of what you're changing in the PR title. Cross references can go in the description.

Noted, will do going forward!

[franzliedke]

I've tweaked the keys a bit, but used your texts, all in master.

When you have the text, feel free to read our extensive documentation on internationalization, especially this handy appendix. 😀

It's the awesome legacy of our former internationalization expert, who unfortunately can no longer contribute.