Comparing and merging glossary files

[ageorgou]

Only directly on server (#10) or also offline? If the latter, should also allow uploading to server.

[giordano]

For reference, relevant links to look at for the commands we need to run:

• Project Management Procedures with Unix - Harvesting new lemmatisation data
• The oracc command

[giordano]

For files on the server, this was done in #108. It remains to decide what to do with local files.