Fixes/improvements for byobu beta 7

[davwheat]

I've got a bunch of local changes to push that improve a11y and the first bullet, but it broke everything and it's 3am.

Changes proposed in this pull request:

• Fix recipients modal styling issue
• Adds frontend typings for better development
• Hide admin page translation relating to Tags if tags is not installed
• Extract Prettier config to .prettierrc
• Bump Webpack CLI
• Conversions to Typescript and more modern code
• Use core [deleted] text instead of custom translation
• Use oninput instead of onkeyup to support copy-pasting
• Clean up Less
• Merge recipient label borders when next to one another (no more 2px borders!)

Reviewers should focus on:

Screenshot

Confirmed

• [x] Frontend changes: tested on a local Flarum installation.
• [ ] Backend changes: tests are green (run composer test).

Required changes:

• [ ] Related Flarum core extension PR's: (Omit this section if irrelevant)

[imorland]

I think it's entirely possible that you forgot in your sleep deprived state to commit the file(s) that address Fix recipients modal styling issue to this PR @davwheat

[davwheat]

Oh god I did... 😅

[davwheat]

I'm going to get back on this tonight when I get home from college -- sorry about the wait! 🙈

[imorland]

Cool, thanks @davwheat :)

Ping me if you need anything, I'll be around tonight

[imorland]

Also, this will become 1.0.0-beta.7 ;)

[davwheat]

Ok, I think it's ready for review now! Everything works (unless you find it doesn't of course :see_no_evil:)

[Ornanovitch]

Hey! Will https://github.com/FriendsOfFlarum/byobu/commit/2b5a11a3a8175d9abc081e30cc07080b4b8bd459 be added to 1.0.0-beta.7 also, as it resolves a little but important issue?

[davwheat]

@Ornanovitch Cherry-picked that commit and made it a PR: #154

[Ornanovitch]

You rock thanks :sunglasses: