AbstractWizard is now parameterized, addNature/Builder and alreadyExists methods renamed.

Minor: refactoring
Kotlin project wizard added to 'new project' list.
Fix compilation for 0.8.324
JetBrains license added.
Autoimport tests created.
.recommenders folder added to .gitignore.
Autoimport duplication fixed.

 #KT-5360 Fixed
Most of methods are now static. New method for creating source files with specified packages.
Performing multifile tests, multifile test added to testData.
Multifile tests without parameters.
Merge pull request #53 from adkozlov/autoimport-fix

Autoimport fix
Add injector-generator
Make JavaDescriptorResolver use Eclipse Java indicies
Add tests for JDR
Improve tests for completion, do not create java project for each test
To tests
to improve
Update IDEA build id
Return javaPackages correctly
Clean code in test