[small bugs]

Hi,

here are a few small bugs that I encountered. I'm not listing crashes here, I'll be sending those reports via mail.

- Tactical battles - sometimes health bars are messed up; instead of green or red line you get some jumbled pixels. This usually goes away once the unit receives damage.

- Ophidian camp becomes invisible while under construction. But it's still visible on cloth map.

- Tactical battles - sometimes (most of the time, actually) freeze after one unit makes an action and it takes quite a long time (up to a minute) to continue with other units' actions. I noticed that happens almost every time the "defend" option is used.