Merge pull request #161 from claudius108/develop

Improved rendering of error messages for parsing functions.
[performance] Optimizer did not descend into general comparison inside if statement.
Merge pull request #165 from wolfgangmm/develop

[performance] Optimizer did not descend into general comparison
Remove JFreeChart extension, available now in separate repository: https://github.com/eXist-db/jfreechart
Merge pull request #167 from dizzzz/develop

Remove JFreeChart extension
[bugfix] Self axis step incorrectly processed inside enclosed expression.
[bugfix] A let expression should pass through the current context sequence when used inside a path expression.
Merge pull request #169 from wolfgangmm/develop

Fix incorrect processing of self axis step
fix google authentication
add "target" to ignore
Merge branch 'feature/OAuth' into develop
Merge pull request #170 from shabanovd/develop

Fix for google OAuth authentication
[bugfix] Only a DBA should be able to retrieve a backup
Merge branch 'develop' of https://github.com/adamretter/exist into develop
Merge remote-tracking branch 'upstream/develop' into develop
Merge pull request #173 from adamretter/develop

Security check in Backups Module
Update to ant 1.9.3 for Java8 compatibility
added version tag to ant jars
Merge pull request #175 from dizzzz/develop

Update to ant 1.9.3 for Java8 compatibility
[ignore] ant jars now have version numbers: change bootstrap class path accordingly.