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

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

Removed old files

Signing on the way. There is a bug becuse of ucoin API using keyword "self", and it's conflicting with python self keyword.

Account now has Wallets and Communities
Wallets are now managing the network side of ucoin
A community doesnt depend anymore on a wallet
A wallet knows what community it is part of thanks to currency name

Refactoring
Debugging

Configuring account : changing its name and the communities

Sauvegarde de fichier, utilisation de "factory" pour créer des models a partir de rien ou a partir de json.