Merge pull request #910 from dorkster/fixes

Allow translating default hero names
Do not segfault on faulty tile ids, but warn.
Merge pull request #914 from stefanbeller/tileids

Do not segfault on faulty tile ids, but warn.
Remove unused damage and absorb variables in StatBlock

Closes #913

Note, we'll probably want to update dmg_*_min values in flare-game to
1 if we want to keep the current behavior.