Add "import" feature

[richard-uk1]

Allow the user to either upload a file or cut'n'paste their search metadata, and populate the app. It would be good if the json parser was permissive, and ignored any extra fields apart from "includeTerms" and "excludeTerms".

[rw251]

Yep - definitely. There is already code to do this but it's not quite mature enough to enable. The idea was that as well as importing json, you could copy and paste a code set and the system would automatically generate a list of inclusion/exclusion terms - but that's a research project in itself.

[richard-uk1]

They could be called something like "import getset codes" and "import code set". Or maybe they could be in different places, since being able to reverse-engineer terms from a codeset would be a more major feature than simply re-loading a downloaded getset code set.