drawing is performed when save method is executed (not in the
constructor)

hierarchical overlay contain information if there is specific level assigned to it (if not it's considered general)

either pathways and compartments or custom semantic zoom view isi accessible when generating project

Resolve "data upload"

Closes #97

See merge request !43

Merge branch '81-when-changing-default-project-id-make-sure-it-points-to-valid-project' into 'master'

disabling changing default project when project is invalid

Closes #81

See merge request !42

Resolve "mesh connector is down"

Closes #84

See merge request !41

Resolve "Annotations: description of a submap anchor"

Closes #62

See merge request !40

Resolve "'Clear' button function incomplete"

Closes #65

See merge request !39