Fix pep8
allow skipping a set of layers in reload_layers_in_cbx.
remove the current layer from calculate_iri_dialog aal_layer combo
Merge pull request #37 from gem/export-json

export json
Merge branch 'master' of github.com:gem/qt-experiments into draw-iri

Conflicts:
	svir/calculate_iri_dialog.py
	svir/svir.py