* Fix logs from scraper and plugins not being shown in UI
Using `logger.` in the logger package to write logs is "incorrect". This
as the package contains a variable named `logger` which contains the
logrus instance. So instead of the log line being handled by the custom
log implementation / wrapper which makes sure the lines are shown in the
UI as well, it's written to logrus directly meaning the wrapper is
skipped.
This "issue" is obviously triggered because in any other place
`logger.X` can be used and it will used the custom logger package /
wrapper which works fine.
* Add plugin / scraper name to logging output
Indicate which plugin / scraper wrote a log message by including its
name to the `[Scrape]` prefix.
* Add missing addLogItem call
* Fix error string capitalization
Error strings often follow another string. Hence, they should not be
capitalized, unless referencing a name.
* Uncapitalize more error strings
While here, use %v on the error directly, which makes it easier to wrap
the error later with %w if need be.
* Uncapitalize more error strings
While here, rename Url to URL as a nitpick.
gitgiggety