[ISSUE-34] - Quality data category. Some questions about the OKAPI errors

Hi Yves,

I've been reviewing your error categories and now have a few questions about how you distinguish between the following pairs of categories:
MISSING_LEADINGWS
MISSINGORDIFF_LEADINGWS
EXTRA_LEADINGWS
EXTRAORDIFF_LEADINGWS
MISSING_TRAILINGWS
MISSINGORDIFF_TRAILINGWS
EXTRA_TRAILINGWS
EXTRAORDIFF_TRAILINGWS
In each case the second of the pair seems to include the first in its meaning. So why not have something like the following?

MISSING_LEADINGWS
DIFF_LEADINGWS

Also, for the following, are these automatically determined?
TERMINOLOGY
LANGUAGETOOL_ERROR
Terminology looks like it would normally be spotted by a human, but perhaps you have a different detection method? For the language-tool error, can you provide an example?

Thanks,

Arle