Fixed compatibility issue

Now after adding the app to home screen, user cannot zoom in the view. In addition, when click on the link, the app will not open the safari, instead, it will keep in the home screen page.

Some changes are made in Bootstrap.js. It might cause other side effect in the future
Fix the css bug in month view page. And now after clicking links in month view, the app will stay in home screen.
Fixed the position issue of menu
Fixed the text area in event view page