Add type to some template method, lick Node::CreateComponent etc. Add LoadChunk and LoadAndExecute in LuaFile, Add DrawDebugGeometry in Renderer.

git-svn-id: http://urho3d.googlecode.com/svn/trunk@2507 3bd170d8-ddcf-f82c-f583-7a401ccf5608
Use ResourceCache:GetResource("XXX", ...) and Node:CreateComponent("XXX") method.

git-svn-id: http://urho3d.googlecode.com/svn/trunk@2508 3bd170d8-ddcf-f82c-f583-7a401ccf5608