Build: Build android-dx and intellij-sdk repo to dependencies/repo

From KOTLIN-CR-2801 reasons to move:
 - I've changed repo layout and build process in incompatible way and decided to change location
 - It was difficult to find and annoying to locate, it was very deep and long path
 - I think dependencies/repo path is very easy to remember and find
 - It was called dependencies some time ago

.gitignore

@@ -2,7 +2,7 @@
 .idea/shelf
 /android.tests.dependencies
 /confluence/target
-/dependencies
+/dependencies/repo
 /dist
 /local
 /gh-pages
@@ -15,10 +15,6 @@ workspace.xml
 *.versionsBackup
 /idea/testData/debugger/tinyApp/classes*
 /jps-plugin/testData/kannotator
-/ultimate/dependencies
-/ultimate/ideaSDK
-/ultimate/out
-/ultimate/tmp
 /js/js.translator/testData/out/
 /js/js.translator/testData/out-min/
 .gradle/