v0.4.0 - Submission, dashboards, timezones

• configure information for status submissions
• improve thumbnail handling on submissions
• more details on display dashboard
• introduced profile settings in config
• add timezone configuration to config and frontend
• add simple website renderer to generate a static website showing current item
• add some administrative commands (setup, data check)
• add new context settings to frame configuration (exif, geo)
• introduced new auto-update settings to frames