Change name GradleUtil to GradleSourceUtil
Remove GradleProjectCache - it is very hard (probably impossible) to
guess whether project model needs to be reloaded as there might be
infinitive number of scripts related to it (for example included by
"apply from: 'somescript.gradle'")
Improve GradleModel, GradleModelLoader and GradleProfile API
Partially implement GradleModel (not supported - setting properties,
archiveName and packaging)