Spaces: Show message, if upload exceeds Space Quota

[tbsbdr]

Steps to reproduce

1. login as Admin on: https://ocis.ocis-wopi.released.owncloud.works/
2. Create a Space with 1GB Quota
3. upload a file >1GB - or: many files, each <1GB, but in total > 1GB.
4. upload shows "Upload failed"

Expected behaviour

Before the upload starts, show an error message: "Not enough quota" "There is not enough quota on <Spacename / Personal> . You need additional <xx GB/MB> to upload these files.

Free quota: Total Quota: [Close] [Try again] " ### Actual behaviour Upload fails without telling why

[AlexAndBear]

Decision: Use common message port instead of uppy upload overlay for now