Fix all wallet columns editable
Fix empty name when edit is canceled

- Wallet was displaying too many certifications
- Bug in community refreshing when a new block was mined

Fixed account creation bugs since last small refactoring

- Fixed issue #55
- Fixed display of units in transactions tab
- Fixed an error when an account was not a member of a community

Fix bug refresh_block

Show members in table with columns for pubkey, uid, join date and expiration
Display members who will expire in 15 days as red