Remove all descendant sccounts from parent account candidate.
Update the descendant accounts'full names after parent account is changed.
FIX importing root account name
Enforce only ROOT's parent can be null
Set spinner invisible when it is not enabled.
Revert "Set spinner invisible when it is not enabled."

This reverts commit 04560bb39cbca3687496384b5af87b7727cfa6bb.
Merge pull request #206 from fefe982/dev-parent-account

Improve editing of accounts
Fixed: Descendant accounts cannot be set as parent of same