Load entity

[anncatton]

Initial work for EntityContext: loading a single User entity and displaying meta info in the panel

• Creates custom folder for User content components
• Creates common folder for shared content components
• Moves EntityContext and ListContext into separate ContentProvider, and moved this inside the ProtectedRoute in App
• creates main dictionary for panel components
• some file renaming
• display only, no editing state (buttons do not work). Content mode is mocked for now
• adds enums for fieldnames
• comments out original content components so compiler doesn't yell