Suppress some warnings

Digging the update, by the way
Suppress a warning
Enable up navigation (2/2)
Merge pull request #64 from MBQ-/patch-1

Suppress some warnings
Merge pull request #65 from MBQ-/patch-2

Suppress a warning
Merge pull request #67 from MBQ-/patch-4

Enable up navigation (2/2)
Optimized all png's.

to: optipng -nc -nb -o7
Removed Alert, KO Translations