Query lists by corpus

[Ansa211]

issue: not all queries can run on all corpora (because of corpora-specific node-types, attribute names or attribute values where these belong to a closed list)

possible solutions:

• [x] current solution: when a query is selected, indicate if it has already been parsed on this corpus
• [ ] as now, but let the user limit the query lists and queries listed in them just to those that contain at least one query that is known to parse successfully on the current corpus
• [ ] same as the previous solution, but run the test parses automatically in the background for all new queries saved to named lists
• [ ] make each query / query list be shown only on corpora that share the same pml schema as where the query has been originally developed

[Ansa211]

note: in the current solution, if I try to run a query on a treebank where it does not parse, the red questionmark should really change to a red exclamation mark to tell me not to try it again...