[JENKINS-17667] Reverting commit e3952f41c5649c326ace3cc263420a8c287e1e7c.
change default font to helvetica
IE compatibility mode tweaks

Set "X-UA-Compatible" meta tag (MSIE browsers only - forces browser compatibility mode)
JS based warning if Document Mode doesn't match IE version (MSIE browsers only)
[FIXED JENKINS-20663] For now, go back to using ZipOutputStream from Ant that supports setting the filename encoding (present in java.util.zip only in Java 7+).
[maven-release-plugin] prepare release jenkins-1.573
[maven-release-plugin] prepare for next development iteration
updated changelog for release
updated changelog as a part of the release
merged back the RC branch

Conflicts:
	core/src/main/java/hudson/tools/InstallerTranslator.java
creating an RC branch
the trunk is toward 1.575-SNAPSHOT
add missing td elements for table rows without help