[bug] Forum categories are case-sensitive, but not covered in the code

[ash0080]

Reason for this issue If you create a category string with Uppercase the filter function won't work, because the category string is not match actually

Steps to Reproduce

[ash0080]

After a bit of fiddling, I think it's better to split the category into the label and _id fields, otherwise, we need to consider spaces, special characters, and so on.

I'm guessing it's probably the same for tags, not confirmed yet.

Or use the i18n for this purpose?

[ash0080]

Sorry I've found the right way. as a ref here

categories: [
  {
    name:  'how to &&&& TEST(what erve)',
    value:' howto'
  }
]