Ctrl+click navigation added.

 #KT-5366 Fixed
Minor: OpenEditor string is now a constant string in OpenDeclarationAction class.
Minor: Java code conventions.
TestCase classes are now abstract. AllTests class added for completion.

Minor: excess empty lines removed
Autotesting framework.
Autoimport tests are now automatic.
Tests for navigation performed.
"import" is now a keyword.
Hyperlinks not on every java word.