[meta] Good First Issue watchtower

[ShadowJonathan]

Context:

<@anoadragon453> If you're up for it, and come across some that are perhaps too easy, or you just don't want to solve, would you mind flagging them and I can label them Good First Issue?

This is that issue, I'll add them in the following format:

issue: #XXXX
e.s.t.: P3, T-Enhancement, (etc.)
comment: (Here is some extra comments and context to go with)

(e.s.t./est is "extra suggested tags")

[ShadowJonathan]

issue: #4173
e.s.t.: P3, T-Enhancement
comment: Seems to simplify the Element clients, and i've encountered some situations where this doesn't properly happen, I'm pretty sure there's a way to instantly update account data from a room creation handler.

[ShadowJonathan]

issue: #9340
e.s.t.: (already triaged)
comment: Seems to be simple enough to add a if txn_id == "" check somewhere.

[ShadowJonathan]

issue: #8551
e.s.t.: P4 (or P3), T-Task
comment: Seems to be clear enough for someone to poke at the codebase and implement it :P

[ShadowJonathan]

issue: #5538
est: P4, T-Task
comment: Seems to be simple enough, riot-element is mentioned, but imma assume that was Riot before RiotX, maybe it's also helpful to inspect element-android before making that issue a go-ahead.

[ShadowJonathan]

issue: #4175
est: S-Tolerable, P3, T-Task
comment: Maybe not 100% a good issue for anyone completely new to matrix, needs a bit of knowledge on how to construct a mxc uri, and some hashing out would probably need to be done in PR review to use the right helper methods (if these exist)

[ShadowJonathan]

(tentative)
issue: #4363
est: S-Minor, P3, T-Task or T-Defect
comment: I'm not entirely sure about this one, it seems to be a bit too complex for a good first issue, i'll take up on it if it isn't.

[ShadowJonathan]

issue: #3058
est: P3, T-Task
comment: This seems to mention synapse v0.26, is it possible this is already fixed? Maybe helpful to look at that first. Other than that, it looks to be a simple if "to" not in query.keys() check :P

[ShadowJonathan]

issue: #9032
est: P3, T-Task
comment: This seems already claimed by @PaarthShah, but it's been longer than a week since his reply, so i'm putting it on here for probable GFI triaging :)

[ShadowJonathan]

(tentative)
issue: #6085
est: P4, T-Task
comment: Not really sure about this, because this means changing pure-static files to one-time templated ones, which might be difficult to do, as well as with other solutions.

[ShadowJonathan]

issue: #1521 (closed)
est: P4, T-Task, S-Tolerable
comment: Seems to be easy enough to add a proper check for a MXID, and then fail early with 400 on that.

[richvdh]

I think this issue has served its purpose