removed a lot of the goto usages, used goto_assignments instead. Did the same also for a lot of definition uses

test/completion/goto.py

@@ -1,4 +1,4 @@
-# goto command tests are a different in syntax
+# goto_assignments command tests are different in syntax
 
 definition = 3
 #! 0 ['a = definition']

test/completion/renaming.py

@@ -1,5 +1,5 @@
 """
-Renaming tests. This means search for related names.
+Renaming tests. This means search for usages.
 I always leave a little bit of space to add room for additions, because the
 results always contain position informations.
 """

test/completion/thirdparty/jedi_.py

@@ -10,8 +10,7 @@ el.description
 
 
 scopes, path, dot, like = \
-    functions.prepare_goto(source, row, column,
-                            source_path, True)
+    api._prepare_goto(source, row, column, source_path, True)
 
 # has problems with that (sometimes) very deep nesting.
 #? set()