Plagiarism plugin for OJS/OMP/OPS 3.3.0-x

Release features

1. update of iThenticate API to latest version
2. EUAL confirmation process
3. New credentials added
4. Removal of previous API library and introduced new custom service class for API communication
5. Removal of composer dependency
6. Presenting the possible proper EULA as submission checklist
7. stamping of EULA to submission and submitter
8. verification of user provided ithenticate service access(API URL/KEY) before storing.
9. context wise EULA caching to avoid continuous data polling form API service .
10. allow iThenticate retry, polling, similarity score presentation for each file, refreshing similarity scores and launch similarity viewer .
11. Config to manage auto upload which allow iThenticate auto upload at submission time or later upload manually
12. Compatible with OPS

Following Issues get resolved by this release

1. pkp#4
2. pkp#55
3. pkp#48
4. pkp#46
5. pkp#23
6. pkp#49