KT-2128 Code completion after number with dot - don't complete on '.' only in ".."

#KT-2128 Fixed

idea/testData/completion/confidence/CompleteOnDotOutOfRanges.kt

@@ -0,0 +1,3 @@
+fun test() {
+  12.in<caret>
+}

idea/testData/completion/confidence/CompleteOnDotOutOfRanges.kt.after

@@ -0,0 +1,3 @@
+fun test() {
+  12.inc(). <caret>
+}

idea/testData/completion/confidence/NoAutoCompletionForRangeOperator.kt

@@ -0,0 +1,4 @@
+fun test() {
+    for (i in 12.<caret>) {
+    }
+}

idea/testData/completion/confidence/NoAutoCompletionForRangeOperator.kt.after

@@ -0,0 +1,4 @@
+fun test() {
+    for (i in 12.. ) {
+    }
+}