YAFT-63 update sakai-trunk-experimental branch; prep yaft to build against Sakai 10 trunk

1. \<parent\> changed to master
2. yaft base pom pruned of redundant \<properties\>, \<respositories\>, \<dependencyManagement\> elements in favor of pom inheritance.
3. fixed calendar api groupId.
4. deleted eclipse .classpath, .project files
5. updated .gitignore
6. updated \<scm\> (point to Git not SVN)
7. updated spring dependencies
8. other misc. cleanup

Cheers,

Anth