missing characters in salt array for password

[Alexander Klose]

the salt array misses the characters "W" and "w", fixed in #66

settings/src/password.cpp

Line 14 in 3bb9540

 QByteArray alpha = "0123456789ABCDEFGHIJKLMNOPQRSTUVXYZ" 

settings/src/password.cpp

Line 15 in 3bb9540

 "abcdefghijklmnopqrstuvxyz./";