Remove jQuery and SASS dependency

[enesser]

SASS support seems unstable in packages found on Atmosphere for now. And I'm not really using jQuery for anything other than the bootstrap dialog box when the game first opens.

There's very little activity outside the HTML5 canvas for this game in terms of CSS or JavaScript, so removing these two dependencies will make it easier for people to get the game running and I'll have less to worry about when packages upgrade during this volatile time for Meteor (0.9 to 1.0).