Properties panel performance

[fireclawthefox]

The performance of the properties panel is affecting the whole application, dragging a widget around, changing options etc, makes the full panel reload

• [x] Don't reload full panel every time a value updates, only change values of entries in the panel
• [ ] Restore opened sections
• [ ] Remove the delayed update of the panel once performance is up again
• [ ] check if hide/show enhances performance when collapsible frames are closed/opened. Otherwise change to something else (stash/unstash for example)