Upper-limit or warning for too many courses added at one time

[snowme34]

Currently it seems that there is no restriction for the number of courses that a user can add.
So a user can add all the courses, which would be one heavy load for our server (it is meaningless but our server still processes it loyally).

It can be assumed that a user may not do so.

But it is very common for some students to add additional courses when planning their schedule even there are time conflicts.

So it can be expected that a lot of users will click the generate button and see an empty result (with warning) on their first few tries.

My suggestion is to include the conflicts as webreg does. Because in real life, students can use things like podcasts.

And to display a small warning about the large number of courses.

[CTrando]

I'm not sure about the always adding courses regardless of conflicts because then the generation part loses its value, but having a lot of courses makes for a good error popup, and I will put that on my queue.