Fix automatic selection of completion proposal

idea/src/META-INF/plugin.xml

@@ -83,7 +83,9 @@
 
       <completion.contributor language="jet" implementationClass="org.jetbrains.jet.plugin.completion.GlobalMemberCompletionContributor"/>
       <completion.contributor language="jet" implementationClass="org.jetbrains.jet.plugin.liveTemplates.JetLiveTemplateCompletionContributor" id="liveTemplates" order="first"/>
-      <completion.confidence language="jet" implementationClass="org.jetbrains.jet.plugin.completion.JetCompletionConfidence"/>
+
+      <completion.confidence language="jet" implementationClass="com.intellij.codeInsight.completion.UnfocusedNameIdentifier"/>
+      <completion.confidence language="jet" implementationClass="com.intellij.codeInsight.completion.AlwaysFocusLookup" order="last"/>
       <completion.skip implementation="org.jetbrains.jet.plugin.liveTemplates.JetLiveTemplateCompletionContributor$Skipper" id="skipLiveTemplate"/>
 
       <psi.referenceContributor language="jet" order="after JetCompletionContributor" implementation="org.jetbrains.jet.plugin.references.JetReferenceContributor"/>

idea/src/org/jetbrains/jet/plugin/completion/JetCompletionConfidence.java

@@ -1,18 +0,0 @@
-package org.jetbrains.jet.plugin.completion;
-
-import com.intellij.codeInsight.completion.CompletionConfidence;
-import com.intellij.codeInsight.completion.CompletionParameters;
-import com.intellij.util.ThreeState;
-import org.jetbrains.annotations.NotNull;
-
-/**
- * @author Nikolay Krasko
- */
-public class JetCompletionConfidence extends CompletionConfidence {
-
-    @NotNull
-    @Override
-    public ThreeState shouldFocusLookup(@NotNull CompletionParameters parameters) {
-        return ThreeState.YES;
-    }
-}

idea/src/org/jetbrains/jet/plugin/completion/handlers/JetFunctionInsertHandler.java

@@ -20,7 +20,9 @@ import org.jetbrains.jet.plugin.completion.JetLookupObject;
 import org.jetbrains.jet.plugin.quickfix.ImportClassHelper;
 
 /**
- * Inserts '()' after function proposal insert.
+ * Performs number of code modification after insertion jet function:
+ * - Insert ()
+ * - Add import directive if necessary for top level functions
  *
  * @author Nikolay Krasko
  */