Other than manually showing the hidden diretories (.restoreXX, .recycle, .cache) and deleting them (or using a command line or other tool) is there a quick way to clean a project of these diretories? E.g., a “clean” option would be useful.
Unfortunately, as of the time of writing (20/02/2015) we have not yet implemented this feature. We will do so eventually; However, in the mean time, deleting those directories manually is the only way to reduce the size of a project for transport.
Note that our revision control integrations do not check the contents of those directories into your revision control repository, so it is unnecessary to delete those files manually if using revision control.