Alter database Jump information to allow for removing entries in middle of table

[ChrisLane]

User Story

The user should be able to delete a jump in the middle of their entries. For example, if jumps 1,2,3,4,5 exist, the user should be able to delete jump 3 without breaking any features.

Acceptance Criteria

• Individual jumps can be deleted
• Deletion of a jump will reduce the jump numbers of jumps that followed by one
• Deletion of a jump does not cause any errors

Definition of Done

This task is done when a user can successfully delete a jump from their logs.