Merge pull request #815 from myk002/valgrind_fixes

don't use unitialized palette memory
fix mod sprite positioning in interception.
Localizing installer
update menus on window resize.
alter screen res options

happy compromise: offer both methods of scaling.
the remainder of a division by 4 is going to kill us all.
k so that bit wasn't necessary, but god damn

don't use screen scaling without opengl... just... don't.
fix loading message when letterboxed in software mode
fix for bug 539
break translations
fix for bug 541
don't allow user to scroll while bullet is in flight
add some UFOExtender options:

No Funkers
Fix Scaler Functions for great justice

with thanks to Volutar for pointing out the logical flaw.
Updating installer
Fix letterboxed screen not clearing properly.
Added Go To Base button to Intercept screen
Fixed Options buttons staying pressed if mouse was dragged away.
Input is now locked when typing in a text box to avoid accidentally triggering shortcuts and other weird behavior.
Just press Enter or click away to unfocus the textbox.
screw it, no filters for anybody

i'm taking my ball and i'm going home.