Merge pull request #23 from ShunkevichDV/master

Conflict resolved
fix errors
Merge remote-tracking branch 'origin_fork/master'

Conflicts:
	documentation/section_unificated_semantic_network_and_representation/section_sc_code/section_subject_domain_of_sc_identifiers/ontology_subject_domain_of_external_sc_identifiers_content.scsi
Merge remote-tracking branch 'origin_fork/master'
extensions fixed