…ble use will be equal to gnome

(what is logical), but Gnome2 way of changing wallpaper will not work, so adding Gnome3 way.

TODO: On restart, name and path are not known as this depends on DE,
it would be nice to write function also for it, eventually.

current wallpaper on start/boot (it's been read from config file)
current wallpaper when changed using browser

I was stuck for a while (an hour or two) thinking to store title and path
of wallpaper in memory or on disk, cause both approaches have its pros & cons:
I don't like storing on disk things which can be without problems stored in
memory, that approach reminds me too much of Windows registry,
but here I found comment that browser can stand as standalone app, and to add
in it some object passing would disrupt that elegance.

Solution was obvious when I realized that config.py already writes on every
wallpaper change counter stats to config.py, and as difference in writing
5 or 6 bytes and 30 or 40 bytes to disk means absolutely nothing (data is
written in blocks, long time ago smalles block was 512 bytes), so config
file now stores title and path of current wallpaper.

I had thoughts to store all info, but why to store something that you do not
use? Only thing that I'm still thinking of is URL, but that depends what
you want to do with information you have about current wallpaper.

If you want to send pic to somebody, path is enough, and sendto email app
opener could be handy, if you want to send only URL, that can be done by
email or some IM. For now, title and path are enough. This is longest
commit comment I've ever written. :)

'/usr/local/share/gnome/autostart/webilder_indicator.desktop' has malformed
Icon key 'camera48.png'(should not include extension)