Add flight route map; algorithm for picking from multiple nav points; some tests

app/Database/migrations/2017_12_20_004147_create_navdata_tables.php

@@ -25,6 +25,7 @@ class CreateNavdataTables extends Migration
             $table->float('lon', 7, 4)->default(0.0);
             $table->string('freq', 7)->nullable();
 
+            $table->primary(['id', 'name']);
             $table->index('id');
             $table->index('name');
         });

app/Database/migrations/2017_12_20_005147_create_acars_tables.php

@@ -13,13 +13,9 @@ class CreateAcarsTables extends Migration
      */
     public function up()
     {
-        /**
-         * See for defs, modify/update based on this
-         * https://github.com/skiselkov/openfmc/blob/master/airac.h
-         */
         Schema::create('acars', function (Blueprint $table) {
             $table->bigIncrements('id');
-            $table->string('acars_id', 12);
+            $table->string('pirep_id', 12);
             $table->string('name', 10)->nullable();
             $table->float('lat', 7, 4)->default(0.0);
             $table->float('lon', 7, 4)->default(0.0);
@@ -29,8 +25,8 @@ class CreateAcarsTables extends Migration
             # polymorphic relation columns.
             # parent_type can be flight, pirep or acars
             # once
-            $table->unsignedBigInteger('parent_id');
-            $table->string('parent_type');
+            #$table->unsignedBigInteger('parent_id');
+            #$table->string('parent_type');
 
             $table->timestamps();