Provide all properties to OTA HTML Generator

not only the ones starting with mios.ota-service
Allowing env variables in OTA HTML generation
Remove duplicate flush.
Remove hard coded xcode plugin version in integration test.
Missing close of InputStream
Allowing null properties in OTAManager for tests
1.9.1
1.9.2-SNAPSHOT
Added release notes to github site
Provide facilities for reading/writing the pom for ProjectModifier.
Bugfix: handle dependencies of types other than xcode-lib and xcode-framework.
Release 1.9.2
ReleaseNotes
How to build the Cordova HelloWorld project with our plugin.
Make all.sh more failfast, improve http proxy handling.
Explain how to find the mavenized projects.
Update Cordova documentation

Cordova howto is now independent of the cordova version.
update the shell scripts.
Use GenericZipBundles
Fix docu for alternate public header folder path.