Remastering of documentation provider

- Remove whole file resolve
- Take already resolved element
- Get kotlin element behind the wrapper directly
- Remove outdated isKotlinDeclaration method
- More tests

idea/testData/editor/quickDoc/JavaClassUsedInKotlin_Data.java

@@ -0,0 +1,9 @@
+import java.util.List;
+
+/**
+ * Some Java Class
+ * @param <T>
+ */
+public class SomeClass<T extends List> {
+
+}