aMatrix is already a .matrix, does not contain a .matrix (fixes #1104)

Better nipples from Rob

Update languages from transifex. As very special case, I added some l…

…anguages that are under 80%, because their version released in 1.0.1 was pre-transifex (alpha 7), so even an uncomplete translation is better of a so old one.

Reviewed and added estonian translation (for #372)

Fix window application icon in built (frozen) applications. Build pro…

…cess removed required icons.