Syndicate Bomb tweaks

-Minimum countdown raised to 60 seconds
-Visible timer added when examined
-Needs to be bolted down before it can be used

The first two changes are done to encourage a tense bomb-defusal situation, whereas before most players did not bother because they could not tell how long they had. 30 seconds was not enough time for discovery and defusal.

The third change was done to prevent the bomb being used as a grenade, holding onto it and hiding until the time was low enough to just chuck it into a crowded area. It also prevents players from hiding it in disposals or a locker.

All three changes were done to make it less of a stealthy explosive device and more of a panic-inducer with a huge payoff if it succeeds. (It's near-max yeild!)

A changelog has been attached.