python version, desktop mode (pgAdmin4)

Hi, i've just installed pgAdmin4 on ubuntu 14.04 using git (and QT4).
I have 2 newbie questions about it:

I use python3 in my virtualenv, but qmake says "Python2 detected". (i
installed libqt4-dev with apt-get, so not within the virtualenv, i don't
think the latter is possible?)
I have not encountered any problems that i can relate to the deviant python
version. So is this actually a bogus message? Or should i create an
environment variable like on windows?

Also, the desktop mode still uses the browser. Only it stores my settings
in a different file, which is stored in my home dir and without a password.
And i have access to the root filesystem.
I hear that on windows, this runs as a desktop application. Is there a
possibility to do this for ubuntu?

Cheers,

--
Willy-Bas Loos