This reverts commit a4256fcb, reversing
changes made to aa2dd717.

Whenever we hangup or our peer hangs up a call, an entry is added to the history
(in memory). When the daemon exits, it will save the history
automatically.

99 % of these are just whitespace changes. Some unnecessary includes
removed as well

sflphone-common -> daemon
sflphone-client-gnome -> gnome
sflphone-client-kde -> kde
sflphone-plugins -> plugins