Make HtmlTidyTextTransformer configurable and improve HTML5 handling
Implement merge-1-extract.php to extract content from confluence pages
Implement merge-2-extract.php to extract content from modx rtfm files
Implement merge-4-extract.php to extract re-converted content
Implement merge-5-extract.php to extract re-imported content
Implement merge-6-cleanup.php to clean up initially migrated content
Implement merge-7-cleanup.php to clean up merged content
Implement merge-8-copy-files.php to copy merged contributions
Implement merge-9-metadata.php to add metadata
Implement merge.import.php to import merged contributions

Updated DocImporter to allow taking in a list of pages.

Added normalizeLinks feature to ContentFixer and fixed a regex in
fixRelativeLinks.
Update readme's
Move merge processors to RtfmMerge
Fix an issue in ContentFixer::normalizeLinks

Page content that was fixed in normalizeLink wasn't being updated in
normalizeLinks.

Also allowed anchors with just a # to be normalized.
Merge branch 'feature/html-merge' into develop
Fix a regex in ContentFixer::normalizeLink
Add notes for merge scripts that cover multiple steps
Merge branch 'feature/html-merge' into develop