Merge branch 'hotfix/1.7.4'
Preserve language for default revision flags #1484
Fix external keys with onlytopic.in.map #1489
Improve topic merge unit test with non-ASCII characters in IDs #1491
Add URI cleaner with non-ASCII output #1491
Fix non-ASCII IDs in topic merge #1491
Merge branch 'hotfix/1.7.5'
Merge branch 'hotfix/1.7.5' into develop

Nothing to merge, hotfix features were backported from develop.
Fix 1.7.5 release build
Skip ID validation in resourceid
Update testsuite for resourceid validation
Document Java code
Change integrator to use configuration as a backup #1494
Deprecate integration.properties and clean integrator code #1494
Update test suite
Clean Java indentation and imports
Remove obsolete doc directories #1495
Merge branch 'develop' of github.com:dita-ot/dita-ot into develop
Cleanup: move parameters out of comment
Separate documentation source and output into difference folders