Summary: When Flipper is running in dev mode we should always use bundled version of plugin (e.g. loaded from sources) even if a newer version is installed. Otherwise it could happen that Flipper will load installed version and it will not be possible to test your changes of plugin sources.
Reviewed By: passy
Differential Revision: D22016564
fbshipit-source-id: fbf63d5248b60034dc61688e4faa9b54890b744e
74a27aafcc