Add hybrid database option

[bherr2]

Currently the EUI can connect either to a remote api or to a local database. Add a new hybrid mode that will use the local database for queries based on the data and fetch requests for cached versions of ontology-only requests (ie *-tree-model requests and other relevant requests in ccf-cache). ccf-cache should also be in assets (probably even move them over and have ccf-api reference them from there).

Add/update web component options for enabling this (should be the default if using a client-side database).

[bherr2]

Ok, I think the logic should be that if use-remote-api="true" but one or more dataSources is provided, then use the API for the dataSource independent stuff (ie *-tree-model requests and other relevant requests in ccf-cache) and local db for the queries involving the dataSources.