Opportunity phone call fix (and more)

Overview
If you have Into The Future, you may have noticed that you rarely (or even almost never) receive any skill opportunity phone calls in your base world, apart from the celebrity opportunities (see https://www.youtube.com/watch?v=pE2eNrvWpvg). This bug is caused by having Into The Future itself, so if you don't have it, you don't need this fix.

I love opportunities. I really love it. A lot of people I know don't really appreciate opportunities because it's deemed as "unfit" for a sandbox simulation game and repetitive. But to me, the regular Sim's lives themselves are repetitive, and opportunities are a nice addition for a side quest for Sims to complete when I'm bored. Yes, some opportunities may repeat, but I can complete and cancel them anytime I want. Besides, many opportunities actually provide cool benefits that are part of the game as well, like Omni Plants, resurrecting a ghost, and new writing genres. Being prevented from experiencing these opportunities seems infuriating, at least for me.

Technical information about the bug


----------------------

I've removed the tag and reduced all the weighted chances of these opportunities to 5 to match the others. Only ITF skill opportunities are affected. This does not eliminate ITF skill opportunities, but rather, merely makes them have equal chance with the rest skill opportunities.

Bonus
I've included an additional separate mod, called "More opportunity phone calls.package". This mod increases the chance you will receive a phone call. By default, your Sim will get an opportunity phone call between 1-3 days. This mod changes the value so you will get an opportunity phone call every day, because I still think opportunities are quite rare. You won't get any phone calls while an opportunity is still going. I think not many people will want it to occur so often, which is why I decided to separate it.

Conflicts
Opportunity phone call fix.package will conflict with mods that modify Opportunities_EP11.XML. It requires ITF, or it will just do nothing.

More opportunity phone calls.package will conflict with mods that modify OpportunityManager.XML. The mod is for base game, so you can use it even if you don't have ITF installed.

Compatibility
This mod is made with patch 1.67. To use it, just put it in your Mods folder.

Additional Credits:
Huge thanks to the anonymous user who has helped me figure out what caused the bug. Screenshot was found from Google. Source: http://brontoforum.us/viewtopic.php?t=338&start=180