Support for simplified plan descriptions (for the web).

[dmgav]

Add a parameter to plans_allowed API that allows to choose between full and simple descriptions of plan parameters. The parameter should be optional (full by default). If full is selected, then the list of allowed plans must be returned unchanged. If simplified is selected, then apply function bluesky_queueserver.conversions.simplify_plan_descriptions() to the list of allowed plans before returning it.

In the future the set of options may be expanded to allow clients to request JSON Schema (jsonschema option).