use libuv event loop in the glfw view

Integrates libuv's default loop with GLFW's glfwWaitEvents() call. See https://github.com/joyent/libuv/issues/1246 for more details on integrating event loops.

fixes #149

common/curl_request.cpp

@@ -341,6 +341,8 @@ void async_cancel_cb(uv_async_t * /*async*/) {
 }
 
 void thread_init_cb() {
+    curl_global_init(CURL_GLOBAL_ALL);
+
     loop = uv_loop_new();
     uv_async_init(loop, &async_add, async_add_cb);
     uv_async_init(loop, &async_cancel, async_cancel_cb);