Merge pull request #1 from istudens/master

reverting back to Chao's bugzilla interface
Merge pull request #3 from soul2zimate/master

Fix some FIXMEs
Merge pull request #4 from soul2zimate/master

Add the getBug() functionality in class Bugizlla
Make Bug and Flag serializable, methods checkBugzillaId() checkUpStreamPullRequestId() non static