#62 Update the getFilterOptions - count function (state: open)

Update the count function for getFilterOptions. Add the IdList of items to the determineCount functions. This fix a problem where all items are counted and not only the ones in the idList.

Description

I figure out that the count doesn't work as aspected. It count all entries and not the subset i entered via the id list. So i change the handling for the count function. With this change the count function count all or the subset of the items.

Checklist

• Read and understood the CONTRIBUTING guidelines
• Created tests, if possible
• All tests passing
• Extended the README / documentation, if necessary
• Added myself to the @authors in touched PHP files
• Checked the changes with phpcq and introduced no new issues

Was accidentally closed by releasing 2.0.4

Rework done ;)

@discordier pls check your review...