Fix: ontology submission metadata file rework

[jonquet]

This PR is a follow-up of #72 , the main changes were:

• Add a Template added at top of file (https://github.com/ontoportal-lirmm/ontologies_linked_data/pull/108/commits/1129dc3b04b533634d040d21c418c4b7847b5614)
• Consolidation of the "General" properties (https://github.com/ontoportal-lirmm/ontologies_linked_data/pull/108/commits/8c0dc51b2b56163cfaa7766fe7e1544777e47f54)
• Consolidation of "Licensing", "Description" and "Dates" (https://github.com/ontoportal-lirmm/ontologies_linked_data/pull/108/commits/96afad68cd5ffea820b4270b7a3cbd11429f86bf)
• Consolidation of the "Person and orga" properties (https://github.com/ontoportal-lirmm/ontologies_linked_data/pull/108/commits/a02f44e8a7012314cb1c7b2d1b87d973e03635ca)
• Consolidation of the "Usage" and "Methodology" properties (https://github.com/ontoportal-lirmm/ontologies_linked_data/pull/108/commits/0f23676cab29edbfc41bdd0dc62633e918fee9e9)
• Consolidation of the "object description properties" (https://github.com/ontoportal-lirmm/ontologies_linked_data/pull/108/commits/9aed47c153988beafef034f1c5274fa02a1be332)
• Consolidated the Metrics properties (https://github.com/ontoportal-lirmm/ontologies_linked_data/pull/108/commits/32a1d7abd77ffbf7ed1586aa6d6bc0f737065a28)
• Consolidation of Links and Relations properties (https://github.com/ontoportal-lirmm/ontologies_linked_data/pull/108/commits/f9d028eba3733164d38053b974c552827c840bb4)
• Consolidation of Content and Media properties (https://github.com/ontoportal-lirmm/ontologies_linked_data/pull/108/commits/aa7e57ddca6024159726c8babe8bb8c7a7635687)