Presentation: Add icons for type aliases

idea/idea-analysis/src/org/jetbrains/kotlin/idea/KotlinDescriptorIconProvider.java

@@ -135,7 +135,7 @@ public final class KotlinDescriptorIconProvider {
         }
 
         if (descriptor instanceof TypeAliasDescriptor) {
-            return PlatformIcons.CLASS_ICON;
+            return KotlinIcons.TYPE_ALIAS;
         }
 
         LOG.warn("No icon for descriptor: " + descriptor);

idea/idea-analysis/src/org/jetbrains/kotlin/idea/KotlinIconProvider.kt

@@ -115,6 +115,7 @@ class KotlinIconProvider : IconProvider(), DumbAware {
             }
             is KtProperty -> if (isVar) KotlinIcons.FIELD_VAR else KotlinIcons.FIELD_VAL
             is KtClassInitializer -> KotlinIcons.CLASS_INITIALIZER
+            is KtTypeAlias -> KotlinIcons.TYPE_ALIAS
             else -> null
         }
     }

idea/idea-analysis/src/org/jetbrains/kotlin/idea/KotlinIcons.java

@@ -43,6 +43,7 @@ public interface KotlinIcons {
     Icon FIELD_VAL = IconLoader.getIcon("/org/jetbrains/kotlin/idea/icons/field_value.png");
     Icon FIELD_VAR = IconLoader.getIcon("/org/jetbrains/kotlin/idea/icons/field_variable.png");
     Icon CLASS_INITIALIZER = IconLoader.getIcon("/org/jetbrains/kotlin/idea/icons/classInitializerKotlin.png");
+    Icon TYPE_ALIAS = IconLoader.getIcon("/org/jetbrains/kotlin/idea/icons/typeAlias.png");
 
     Icon LAUNCH = IconLoader.getIcon("/org/jetbrains/kotlin/idea/icons/kotlin_launch_configuration.png");
 }