Now when a cost rate is assigned to a cost item, it creates also a relation between them, making the relation more consistent. It is also shown in the UI
* Added Quickstart guides for Linux and Windows IDEs using VSCode
* added some tips to Linux QS
* Added point 15
* extra picture for step 15
* Added windows part
* updated windows vscode launch settings
* added info about branch rebase for PRs
* updated dev_environment to cope for some errors
`+` has a higher precedence than `or`, so it resulted in the error below
```
Traceback (most recent call last):
File "\bonsai\bim\module\spatial\prop.py", line 86, in update_active_container_index
tool.Spatial.load_contained_elements()
File "\bonsai\tool\spatial.py", line 312, in load_contained_elements
cls.load_contained_elements_by_type(container)
File "\bonsai\tool\spatial.py", line 321, in load_contained_elements_by_type
results = cls.get_container_elements_grouped_by_type(container)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "\bonsai\tool\spatial.py", line 294, in get_container_elements_grouped_by_type
element_type.is_a() + "/" + element_type.Name or "Unnamed"
~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~
TypeError: can only concatenate str (not "NoneType") to str
```
There seems to be cases when Blender might crash too unexpectedly.
E.g. #6686 - during viewport render system is running out of resources and crashing without leaving blender.crash.txt, leaving everyone clueless. Which is arguably a bug in Blender (both crash and lack of any crash report), but at least we'll have a fallback for this case.
What bonsai.crash.txt does - it's created in system temp folder with the current Python traceback, just before some dangerous operation. If operation didn't crashed Blender, then file will be unlinked. If crash did occurred, it might be the only clue for users and devs on what actually happened.
Otherwise it was trying to load drawing styles too early, when drawing was not yet active. And then they were reloaded again during ActivateDrawingBase. Occurred after c2860e6, before this commit issue was kind of hidden.
Dion Moult
