show simple version number as header in login form

so that is it visible when you start up
smarter update window

option to open a provided url per button
also changed new version field to a new name
(this change depends on updater update)
Merged 'develop'.
does that make travis qt4 happy?
put headers where they should belong to
updater option
moved qurl.h back
add option to get notified of beta versions
version up

some reading :))
improved logo
login

resized
new preferences to disable automatic welcome
fixed en localization
wikiuser fix

it was possible to return constructor before setup of all variables, which resulted in random nonsense being present as values in some of these
renamed multithreaded gc macro
--login-file bug
dry mode
much better for reading now
cleaned up
Merge pull request #81 from huggle/feature/dry

Dry mode to be read only on a wiki