Update version number for next development cycle: 1.1.6-zdev
Updated all modules to current versions
add nuget packages cleanup
Remove and ignore repository.config

According to http://stackoverflow.com/q/7286261/4918, the file is "mostly
a NuGet implementation detail, and should not be dealt with directly."

Also, if "you use the Package Restore workflow, you can completely omit
the Packages folder from source control (including this file)."
Updated all modules to current versions
Merge remote-tracking branch 'origin/develop'