Removed common stylesheet and associated files and made the build script copy them from EvoThingsExamples.
Added www/ui to .gitignore (copied from EvoThingsExamples).
Removed main view's bottom margin.
Improved error message when cordova is not installed.
ios: Replaced hard-coded CFBundleVersion string with EVOTHINGS_CLIENT_VERSION_NUMBER.
workfile: use FileUtils::Verbose.