use JGit instead of native Git installation

- preconfigured JGit
- removed install-git job
- remove HudsonStarter plugin
updated Jenkins (1.532.2, LTS) and Git plugins

- Git plugins needs updates for dependencies
- updated neo sdk
add --uri-encoding UTF-8 to deployment cmd

- there was a warning in management UI about url encoding problems
fixed some branding issues

- SAP HANA Cloud -> SAP HANA Cloud Platform
Merge pull request #5 from stephanme/master

use JGit instead of native Git