readd experimental controllers and add authorization to them
Spec tests
Display wp watched by current user and are not closed
Merge pull request #1921 from netfighter/feature/15333-wrong-number-of-work-packages-shown

Meets #15333: Wrong number of work packages shown for "Watched work packages"
Merge pull request #1920 from opf/fix/readd_deleted_experimental_controllers

readd experimental controllers and add authorization to them
Spec test
initialize user current to avoid failing of copy project process
Merge pull request #1923 from netfighter/feature/15173-subprojects-are-not-copied-correctly-hierarchy-is-lost

Meets #15173: Subprojects are not copied correctly and the hierarchy is lost
Merge branch 'release/3.0' into dev

Conflicts:
	app/models/copy_project_job.rb
	spec/models/copy_project_job_spec.rb