Branch name: asa_typo

You find it on https://bitbucket.org/Wuzzy2/hedgewars-wuzzy/commits/branch/asa_typo

Purpose of code changes on this branch: Fix typos in A Space Adventure. This affects the entire campaign.

Most typos were punctation mistakes, some were capitalization mistakes, few were bad style of expression.

Also missing loc() statements are added and string concatenation is replaced by string.format.

This fixes a part of issue 723.

When reviewing my code changes, please focus on: Whether I have not accidentally broken anything (I have only re-read my diff, but only made superficial tests; pedantically, I would have to completely replay the entire campaign again to be sure).