2 small additions for quick mission generator

[jokash]

1. Random weather - i would like to be surprised and put in different situations

2.Night setting for bombers and transports - for night harassment missions and special paradrop insertions

[sandmarken]

It woud be nice to have the ability to choose what types of plane the enemy can have. For example every time i generate something moscow the axis will fly the mc202.  A plane that wasnt even there historically.  Same with Kuban. For earlier sorties i do not want to meet yak 3 and la5fn.