[fix] added 3' phosphate gain for unspecific cleavage of nucleotides.…

[poshul]

… This is consistant with AbouHaidar and Ivanov 1999.

Description

Previously unspecific cleavage of RNA resulted in the loss of the phosphate group at the cleavage site. Per https://www.degruyter.com/document/doi/10.1515/znc-1999-7-813/pdf it appears that the more common behavior is for the phosphate to stay on the 3' end of the "left" fragment.

Checklist:

• Make sure that you are listed in the AUTHORS file
• Add relevant changes and new features to the CHANGELOG file
• I have commented my code, particularly in hard-to-understand areas
• New and existing unit tests pass locally with my changes
• Updated or added python bindings for changed or new classes. (Tick if no updates were necessary.)

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[poshul]

Jenkins seems to be on the fritz. @jpfeuffer any idea why we are getting the following:
Error when uploading file: /home/jenkins/ws/openms/PR/bldtst/a9154670/build/Testing/20211202-1027/Test.xml Error message was: Operation too slow. Less than 1 bytes/sec transferred the last 120 seconds Problems when submitting via HTTP