Preferences are reset when connect to project

[AenBleidd]

Describe the bug
When project is connected, local preferences are reseted with web preferences from the project

Steps To Reproduce

1. Install BOINC with no projects added (clean install)
2. Make some local changes (e.g. computation settings)
3. Add project (e.g. Einstein@home)

Expected behavior
Local changes to be saved

System Information (please complete the following information):

• OS: Windows 10 (may be applicable to any other OS but not tested)
• BOINC Version: 7.14.2