string match mode, group items, allow disabling URL control for certain filters

[saitho]

Add new setting filter-match-mode to control how strings should be matched.
Per default it matches strictly (string completely equals the input).
But it allows matching substrings:

<filter-container oninit delimiter="," filter-mode="any" filter-match-mode="contains">

or restrict it to input named "title":

<filter-container oninit delimiter="," filter-mode="any" filter-match-mode-title="contains">

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Additional features included:

• Allow disabling URL control by filter name
• Filter groups: filter items can be added to a group. Labels for that group are hidden when no items from that group is visible

[saitho]

I added two new features (disable URL control for certain filters and filter groups)
Both features are used here: https://www.synchronevents.de/veranstaltungen

match-mode can be tested here: https://conan-tcg.net/cards/
"Name" matches by contains (search for "Edo"), while "Card ID" matches exactly (search for "P001")

[saitho]

New attribute filter-input-delimiter-[filter name] on filter container allows splitting the input (mainly useful for text input fields) into multiple strings that are matched as single values.
Can be tested on https://conan-tcg.net/cards/ in Card ID searching for "P002,P003". URL update also takes that into account by combining the values with the set delimiter, which is why this is a filter container setting, not an input setting.