Library panel gets pulled in front when loading the UI
Material Maker version: 0.99
OS/device including version: Windows 10
Issue description: When reorganising the UI to personal needs it gets saved when Material maker is closed. When organising multiple panels into one docking area their order is preserved, except for the library panel. On restart the Library panel is always the first tab.
Steps to reproduce:

- Move the Library panel into any area with multiple other panels.
- Make the library something different than the first tab.
- Close Material Maker
- Restart material Maker
Result: The Library panel is the first tab of where it is docked to.
Okay I just found out that all the panels seem to have some order of priority. Is this done with intention?
Everything related to Panels has to be reworked. Flexible layout is planned, as well as different layouts depending on the tool we're using.