Suggestion: Rename deploy new instance + placeholder

[Nebulis]

• Deploy new instance is a bit vague. New instance of what?
  => suggestion: Deploy new document store

• placeholder is a bit vague as well
  => suggestion: Enter document store address. I would leave the deploy new instance out, if paired with Suggestion: panel for instructions #42
  => second suggestion: To change like in cancel so that it's consistent. Same for any input => 0x... or Address of XXX 0x...