Activity details screen before starting/editing

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When selecting an activity, users should first see a screen with the activity title, description, and preview, and a start button. This can contain curricular integration instruction - like: “this activity is using a marker, which you can print out from here (link). It is designed for classroom use. You should print one marker per small group, and hand out the marker on each table before pressing play. Ready?”

This page should also offer the edit button.

Title and description are already in the system, but we could add setup instruction ("prepare for the activity", maybe also with a "For the teacher/trainer") and intended learning outcomes (or “learning objectives”). Learning outomces/objectives could be provided as comma-separated list and be nicely displayed as tags to one day allow cross-navigation. We also should add level information (age group? Subject area?). The marker link is also already in the system. There is an extension ticket proposing to allow for custom markers.

Tags, part of collection, etc. could also be added and one day could be used for cross-navigation from this screen.

Related tickets: #1772, #1531, #948, #386

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This is connected to calibration