Added support for multiple XWiki account
- Added support for adding multiple XWiki accounts.
- Once the preferences screen is opened you can choose to edit the preferences of other XWiki accounts too.
- After users and groups, the list is loaded it's stored in DB so it will load instantaneously next time you open the app.
- Fixed: Clicking on the save button does not close the activity.
- Fixed: SocketTimeoutException crash.