fix(frontend): Jobs, Exceptions and Alerts say what they mean in plain words

[ExtraToast]

Part of #2385 (step 6).

What this is

The Jobs, Exceptions and Alerts pages came back from the archive tag with wording that was corrected once before, and with some sentences that are hard to read. This changes the words only.

What changes

Labels that were corrected earlier and had come back:

Was	Now
Hide for me	Hide
Show again	Make visible
Run again	Re-run

Other lines:

Page	Was	Now
Alerts	What needs someone, gathered from every page in Management. Each alert clears itself once it is dealt with.	Problems that need someone to act. An alert goes away by itself once the problem is fixed.
Alerts	What needs a look (column)	Alert
Alerts	For you, with "Each clears itself once it is dealt with"	Open
Alerts	Still open, just out of your way	Not fixed yet, only hidden for you
Alerts	Hidden for you · 2	Hidden · 2
Alerts	Nothing needs you right now.	No open alerts.
Exceptions	Every exception the api did not handle, one row per type and place however often it fired.	Errors the api did not handle. The same error from the same place is one row, however often it happened.
One exception	What it concerned last	Where it last happened
One exception	It carried no message.	No message.
One exception	Mark resolved	Mark as resolved
Jobs	Work the site does in the background: sends, syncs, reconciles and Discord posts.	Tasks the site runs in the background, such as sending email, syncing contacts and posting to Discord.
One job	What it concerns	Related to
One job	Nothing in particular.	Nothing.
One job	Run although it would have been skipped	It ran even though it would have been skipped
Run a job	This job takes no arguments.	This job needs no input.

Left as they are, because the site says the same elsewhere: "could not be read" and "No such job".

How it was checked

• No testid changes. The tests that quote a sentence are updated with it.
• 191 unit tests in the touched areas pass, typecheck and lint are clean.

[github-actions]

Changes

Bucket	Files	Added	Removed
frontend	6	█████ 22	░░░░░ 22
tests	5	██ 9	░░ 9
total	11	+31	−31

0.41 test lines per prod line.

Coverage

	Statements	Branches	Functions	Lines
frontend	94.48%	89.93%	92.87%	95.23%
main 08fdcf6	92.74%	88.01%	90.20%	93.37%
Δ	+1.74	+1.92	+2.67	+1.86

Patch coverage: this pull request changes no line that coverage measures.

No coverage reached this report for api (api-unit-test-reports).