Remove deprecated Java and Ant code
Remove deprecated PDF2 code
Merge branch 'master' into develop
Add validation filter #1435
Remove XEP from distribution

[ci skip]
Remove xsl:message debug line
Fix copy/paste error in flagging call
Refactor map to topic element copy to explicitly state class

Instead of changing all classes from map to topic, explicitly define
which elements in map are also available in topic.
Reorder methods for better organization
Clean code whitespace and remove out commented code
Merge branch 'master' into develop
Move Eclipse Help stylesheets to plug-in folder #1447
Move HTML Help stylesheets to plug-in folder #1447
Move JavaHelp stylesheets to plug-in folder #1447
Move ODT stylesheets to plug-in folder #1447
Move XHTML stylesheets to plug-in folder #1447
Move Word RTF topic merge stylesheet to plug-in folder #1447
Remove deprecated legacy PDF stylesheets
Update README.markdown

Fix #1426

Fix typos and improve grammar, phrasing, and terminology; reduce superfluity
Merge pull request #1448 from emth/readme

Update README.markdown