generate-idea-files taks unnecessarily builds the project

This is especially painful when the project cannot be built because we are in the middle of solving some merge conflicts, but we want to fetch and update dependencies. It seems be to be unnecessary to build the project or to do other checks when we just want to load the project into our IDE.

From what I've tested, it is enough to limit dependencies of that task to:
init,maven-ant-tasks-init,resolver-dist-lib,gen-cql3-grammar,generate-jflex-java,createVersionPropFile