add tests for JSP insert of FastArchivalUrlReplayParseEventHandler.
add asp insert test capturing ARI-3880 (test fails)
  missing </HEAD> and <BODY> tag.
Drop !inHead check for BODY insert. meant to fix ARI-3880, but usure of side-effects (need more test cases?)
Includes some other clean up changes and javadoc updates.
Essential change is line 261 only.
add a test checking possible corner case in JSP insert.
this may have been the reason for inHead check, due to a bug in older version of HTMLParser?
add more FastArchivalUrlReplayParseEventHandler test cases for banner insertion.
fix bug if_ flag getting ignored (introduced by previous commit, which fixed problem with fw_ flag)
Merge branch 'ARI-3880' into ait-qa