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
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'