modify ./convert.sh

[nielsklazenga]

• I removed the initial conversion from Word 1997-2003 to Open Document Text, as agreed last week.
• Placed the TEI files under version control in GitHub; added commands to convert.sh to commit and push changes after the conversion from ODT to TEI has taken place.
• Removed command to purge the TEI folder, as that would delete Git-related files and README as well; we could add a command to find files that are more than 1 day old and delete them after the conversion, but files to be deleted should be a rare event, so I think it is better to not include it in the pipeline.

[nielsklazenga]

Looks like I forgot the images. They are not in the rbgvictoria/vmcp-odt yet either. I will fix that and push another commit.