Publish: validate names as the user types
Publish: validate names as the user types

Rejects invalid characters and pops up a form hint explaining what
characters are allowed.

MaxiBoether/lbry-app,lbryio/lbry-app,akinwale/lbry-app,lbryio/lbry-electron,jsigwart/lbry-app,akinwale/lbry-app,lbryio/lbry-electron,MaxiBoether/lbry-app,jsigwart/lbry-app,MaxiBoether/lbry-app,akinwale/lbry-app,akinwale/lbry-app,jsigwart/lbry-app,lbryio/lbry-app,lbryio/lbry-electron,jsigwart/lbry-app,MaxiBoether/lbry-app