Allow filtering contribution list by custom fields

[micsucmed]

closes #6213

Contribution custom fields can now be filtered, and columns can now be hidden/showed:

[ThiefMaster]

Just to mention it here as well, I think it would be good to also allow displaying those custom fields in the list (we already have this in the list of abstracts).

[ThiefMaster]

The default view looks kind of broken (see the table headers near the end):

It looks like the "Material" header is always missing and there's no header above the action button.

Also, IMHO we should keep the columns that were shown by default before enabled by default.

The Contribution "Type" column also changed its place

[tomasr8]

If the ids are guaranteed to be a subset of static_items keys, you could simply:

Suggested change

	return [{'id': id_, 'caption': self.static_items[id_]['title']} for id_ in self.static_items if id_ in ids]
	return [{'id': id_, 'caption': self.static_items[id_]['title']} for id_ in ids]

[micsucmed]

I think they are not necessarily a subset of static items since the function separating the ids takes as dynamic any item that has an id that is not a str

[ThiefMaster]

Are you hiding the contribution type by default on purpose? It also changed places...

[micsucmed]

I am hiding it on purpose since now the table is being rendered dynamically, and if there is no contribution types the column would be empty. It also changed places because of the dynamic rendering, since the order of the columns is not given by a static table

[ThiefMaster]

What do you think about enabling it by default if the event has contribution types defined? I think it's important information for conference organizers that should be shown by default.

Of course in cases like someone first changing the display settings and then creating a contribution type this would need to be manually enabled (since the config is stored in the session), but the most common case would be covered by it.

[micsucmed]

I'm looking into it, let me get back when I get something

[micsucmed]

I included Type as a default column checking if there are any contribution types. There is a small bug bothering me that I can't seem to find the issue, when the first contribution type is created you need to refresh the page for the column to appear, but when the last one is deleted, as soon as the contribution type dialog is closed the Type column disappears.