[EPIC] Extend Media Management Area and improve UI/UX

Sub Tasks

• Failed uploads cause Dashboard to continuously ... (#104 - closed)
• [STORY] As a host, I want to keep the file name... (#142 - closed)
• Set a shorter, default timeout for Tank workers... (tank#67 - closed)
• Audio File Upload does not work with Firefox (aura#389 - closed)
• Display details of failed uploads, including th... (#228 - closed)
• Docs: Document playlist entries and their auto-... (aura#248 - closed)

To be clarified

• State of new media management (#216 - closed)
• [STORY] as a host I want to get an info on uplo... (#225)

Dependency

• [EPIC] Refactor playlist and metadata management (aura#155 - closed)