Handle the asset data after successful mint

[royscheeren]

Problem statement

Keeping the asset and the status of the asset shall move to "minted".

states

• (validated) no backend communication. No storing happend yet.
• processing
• pending (same as readyToMint)
• minted
• indexed

Dod

The db is updated to handle a completed asset.
The mint button does not show up.
Interactions are shown according to the states.

[jdsika]

remark

On uploading an asset the user has to press the website refresh button to see the status change. 'processing' to 'pending' should automatically update visually

[royscheeren]

Most of this is done at the moment. It needs a sanity check and polishing.

[jdsika]

connected with #334