rename ATOM_DEV_RESOURCE_PATH

[sertonix]

renamed ATOM_DEV_RESOURCE_PATH environmental variable to PULSAR_DEV_RESOURCE_PATH

[confused-Techie]

I'm not sure how often this is used within other services or the editor itself. But from a birds eye view it looks mostly fine.

While I'm not sure about the stability of all our packages tests, a few notes:

• Development Tests have 90 failures here, with an expected 82
• UI Tests have 171 failures, while or expected is 178

So some down, some up, but its hard to say if that's the result of this change, or those tests just aren't the most stable.

But if someone from @pulsar-edit/core could chime in with any knowledge about where this variable is used that'd be appreciated.

[Spiker985]

While these appear to be the only two locations that this environment variable is used within the core editor, there's a very distinct possibility that it could be used by packages, in which case we would need to shim it still so that ATOM_DEV_RESOURCE_PATH still exists

[sertonix]

I think rebranding the environmental variables should be tackled later and maybe discussed before