- Managing lost communities (when no nodes could be joined)
- Fixing broadcast management

Added threading of account loading and blockchain watching so that the UI doesn't freeze anymore

Fixing caching bug with blocks being refreshed only every 5 minutes, even if the blocks changed.

Added the possibility to define a default account

New dialog created : PasswordDialogAsker
Needs to be passed throught the Widgets managing the current account

Renaming actions in the member tab
Added a BlockchainInspector thread to check for new blocs and refresh the UI

Removed old files

Fixed a bug when an inputs would be removed from available ones even if the transaction is refused
Added icons
Display community nodes again
Save community nodes and load them when acccessing a community object

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

We can export and import accounts

Configuring account reworking
Some bugs fixed