fix for spotting large units

fixes a lot of things, most notably reaction fire vs tanks.
rename alien tech self destruct option
fix typo
STR_WEAPONSELFDESTRUCTION

53f5000c621e256a54f7bd76acd7bbfbf469a424
Merge pull request #580 from radius75/Polish.lng

STR_WEAPONSELFDESTRUCTION
add "capture mouse" option

not doing menu entries or strings for this one, edit your configs.
STR_WEAPONSELFDESTRUCTION translated
fix some post mission procedures

- make stat caps a const, they're only used for comparison
- rename obscure variable "v" to "tier" in improveStat function
- handle tier properly
- take wounded units out of psi training
fix MC auto end thing

seriously, how is it that this option causes so much trouble?
Centre minimap crosshairs

Care of KevL from the forums.
Merge pull request #584 from 54x/patch-10

Centre minimap crosshairs
Merge pull request #581 from cornels/patch-1

STR_WEAPONSELFDESTRUCTION translated