Changes for Winter 2023

[DavidWhitlock]

• Resolve #424 by generating project time estimates for the koans project and generating summary for multiple terms of data
• Upgraded Jetty to 10.0.11. This is related to #404.
• Make small improvements to the REST projects to resolve #423
• Resolve #410 by renaming student.version to grader.version.
• Resolve #418 by changing the Survey program to reject a student id that is not a Java identifier.
• Resolve #422 by adding comments that clarify that the TextDumper and TextParser classes are for Project 2.
• Resolve #420 by making guava a top-level dependency available to all projects
• Resolve #419 by adding a site.xml to the projects and their archetypes.