MPS-17720 path for a language is not changed in new project wizard when project name is changed
fix path for new solution/language dialog for directory-based format project
MPS-16880 'Delete' in project pane doesn't delete files
Merge branch 'master' into 3.0/victor/bugs

Conflicts:
	workbench/mps-workbench/source/jetbrains/mps/workbench/actions/model/DeleteModelHelper.java
	workbench/mps-workbench/source/jetbrains/mps/workbench/actions/module/DeleteModuleHelper.java
rebuild models after merge