Allow to reset/change server in the App after setup

[smileBeda]

It seems that the app allows no setting to change the server after the fact.
That effectively makes it impossible to use the app if you change server address, after having it connected once.

1. Install SolidTime Server
2. Install Desktop App (Mac)
3. Connect to Server
4. Delete server > set up fresh server with new address or IP
5. App now spins forever as it cannot connect to the old server anymore, but there is no way to somehow change the settings to ping new server, even deleting and re-installing the app wont allow for new connection

---

Current solution to the problem:

1. Go to ~/Library/Preferences/
2. Find solidtime folder
3. Delete it
4. Restart the app

[zerrac]

Same problem here but had to delete ~Library/Application\ Support/solidtime to solve