Merge branch 'develop'
Fix XHTML base stylesheet include order #1425

The bug was introduced in commit 2b5d4dc6.
Update release notes and fix documentation issues
Fix topic level counting with appendices in PDF2 #1428
Fix text overflow issue in lot/lof entries with long titles #1427
Remove deprecated PDF2 code
Fix PDF index generation bug with XEP #1430
Configure Git to use LF line endings for shell files #1432

DITA-OT is build on a Windows machine so that HTMLHelp can be bundled.
To ensure shell files have LF line endings, explicitly configure *.sh
to use LF.
Fix startcmd.sh SH bug #1432

SH in Ubuntu doesn't support [[ conditions, replace with portable code.
Fix startcmd.sh SH compatibility #1432
Fix multiple inclusion of profiling filter #1433
Add hotfix branches to Travis coverage
Merge branch 'hotfix/1.7.1'
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
Remove xsl:message debug line
Fix copy/paste error in flagging call