Added ability to disable categories from server query

[howlinghuffy]

This change allows you to use the "disabledCategories" parameter when quering the languagetool server to disable entire categories of rules for the check.

[danielnaber]

Thanks, could you maybe also write a test case for this?

[howlinghuffy]

For sure, I will do that.

Also, my modifications currently only apply for regular server checks, not for checks in the bitext mode. Should the command work for the bitext too?

I haven't implemented it as yet, as it would involve tinkering with some of the languagetool-core components rather than just the languagetool-server code.

[danielnaber]

I must say I'm not familiar enough with the bitext mode. If turning off rules also works for bitext mode, I'd guess turning off categories should work as well?

[danielnaber]

Implemented, including an enabledCategories parameter (useful with enabledOnly=yes).