wait for 30 seconds in taskmanager instead

problem: because the apps are not inserted into appdb, the cloudron starts out
with an empty view. apps appear suddenly after 30 seconds.

besides, it makes more sense because 30 secs is not really tied to first run

src/cloudron.js

@@ -102,7 +102,7 @@ function initialize(callback) {
     assert.strictEqual(typeof callback, 'function');
 
     exports.events.on(exports.EVENT_CONFIGURED, addDnsRecords);
-    exports.events.on(exports.EVENT_FIRST_RUN, function () { setTimeout(installAppBundle, 30000); }); // wait for 30sec for the addons to start up
+    exports.events.on(exports.EVENT_FIRST_RUN, installAppBundle);
 
     // check activation state for existing cloudrons that do not have first run file
     // can be removed once cloudrons have been updated