'manage filters' dialog bugs

[marc-vdm]

Multiple bugs related to filter dialog manage filters

Multiple filters not applied through 'manage filters' dialog

To reproduce:

1. Open biosphere
2. Open Manage Filters on Activity col
3. Apply 2 filters: does not contain for copper and gold
4. Apply

Creating each separately works, but creating both at the same time does not apply the filter, the filters are stored in the menu though.

Column combine filter state not remembered

When filters in multiple columns are active and OR is selected and manage filters is re-opened, the dialog resets the filter to AND (default).

The column combination should be remembered and fed to the dialog when it is opened.