Modpack Build optimizations

- Changed default min_memory value from '' to 0. Fixes TechnicPack#453
- Updated modpack.build.view blade template
  - Better display handling for min_java/min_memory
- Fixed a bug where minecraft versions for builds were being improperly set

app/controllers/ModpackController.php

@@ -89,7 +89,7 @@ public function anyBuild($build_id = null)
 
 				$minecraft = Input::get('minecraft');
 
-				$build->minecraft = $minecraft[0];
+				$build->minecraft = $minecraft;
 				$build->min_java = Input::get('java-version');
 				$build->min_memory = Input::get('memory-enabled') ? Input::get('memory') : '';
 				$build->save();
@@ -143,9 +143,9 @@ public function postAddBuild($modpack_id)
 
 		$minecraft = Input::get('minecraft');
 
-		$build->minecraft = $minecraft[0];
+		$build->minecraft = $minecraft;
 		$build->min_java = Input::get('java-version');
-		$build->min_memory = Input::get('memory-enabled') ? Input::get('memory') : '';
+		$build->min_memory = Input::get('memory-enabled') ? Input::get('memory') : 0;
 		$build->save();
 		Cache::forget('modpack.' . $modpack->slug);
 		if (!empty($clone))

app/views/modpack/build/view.blade.php

@@ -25,8 +25,8 @@
 			<label>Minecraft Version: <span class="label label-default">{{ $build->minecraft }}</span></label><br>
 		</div>
 		<div class="col-md-6">
-			<label>Java Version: <span class="label label-default">{{ $build->min_java }}</span></label><br>
-			<label>Memory (<i>in MB</i>): <span class="label label-default">{{ $build->min_memory }}</span></label>
+			<label>Java Version: <span class="label label-default">{{ !empty($build->min_java) ? $build->min_java : 'Not Required'  }}</span></label><br>
+			<label>Memory (<i>in MB</i>): <span class="label label-default">{{ $build->min_memory != 0 ? $build->min_memory : 'Not Required' }}</span></label>
 		</div>
 	</div>
 </div>