- added nearly all migration files

- added nearly all database seed files

database/migrations/2017_07_05_124312_create_documents_table.php

@@ -1,32 +0,0 @@
-<?php
-
-use Illuminate\Database\Schema\Blueprint;
-use Illuminate\Database\Migrations\Migration;
-
-class CreateDocumentsTable extends Migration
-{
-    /**
-     * Run the migrations.
-     *
-     * @return void
-     */
-    public function up()
-    {
-        Schema::create('documents', function (Blueprint $table) {
-            $table->increments('id');
-            $table->string('publication_state', 100)->default('draft');;
-            $table->boolean('belongs_to_bibliography')->default('0');
-            $table->timestamps();
-        });
-    }
-
-    /**
-     * Reverse the migrations.
-     *
-     * @return void
-     */
-    public function down()
-    {
-        Schema::drop('documents');
-    }
-}