make YubikeyConfig a QObject and it's getter methods invokable

this will make the getter methods available for calling by name
through the meta object.
refactor building of the logging string

to use a lookup table and format-strings, calling methods in the
YubikeyConfig class by name instead. This will allow building more
flexible logging schemes.
localize OUT_CHAR_RATE defines to settingpage.cpp
move defines for accbox to yubiaccbox.cpp from common.h
change the radio buttons for logformat to a combobox
add a flexible logformat with configurable input
move help texts to it's own header

to reduce re-compile times due to changed texts..
add getting a list of lognames
add help for the flexible logging format
BLURB for yubikey-personalization-gui
add category to BLURB
drop build-homepage script
add NEWS for flexible logging
disable the format edit when not in flexible format
make the logging local resolver take the name as string

to reduce the amount of similar resolvers
add endl and tab variables to logging