Live Templates: proper handling home/end actions with selection in templates

context

+ add tests for editor actions inside template segments

java/java-tests/testData/codeInsight/template/editor/HomeActionWithSelection_after.java

@@ -0,0 +1,5 @@
+public class A {
+  public static void main(String[] args) {
+    template <caret><selection>myVariable</selection>Value text
+  }
+}