Fix Invoice/Estimate template issues and Add Payment Receipt, Custom Payment Modes and Item units

database/migrations/2017_04_11_064308_create_units_table.php

@@ -0,0 +1,34 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class CreateUnitsTable extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('units', function (Blueprint $table) {
+            $table->increments('id');
+            $table->string('name');
+            $table->integer('company_id')->unsigned()->nullable();
+            $table->foreign('company_id')->references('id')->on('companies')->onDelete('cascade');
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('units');
+    }
+}