If the feeling is zero the game's string formatter will treat it as
null, and will newline before the period.
Gen6 (if I recall correctly) had "it was happy" as index 0
Gen8 (new) has "it was happy" as index 1, with 0 being invalid-bad.
Slice the array differently for gen8 to include the empty line as index
0.
Closes#2549 , ty @crzyc && @architdate for testing index 0 :)
be explicit that the string is empty rather than possibly missing
disallow encrypted export for BK4 (they're not encrypted), removes type
check
simplify replaceall in showdownset (don't call ReplaceAll 4x, just get
valid chars and rebuild)
simplify get ribbon sprite name (precompute ToLower and appended values
