Add option to give back the focus to guake instead of hidding the window if it's opened and out of focus
'new tab' added to menu-items
updated NEWS
Changelog redirects to NEWS

Signed-off-by: Gaetan Semet <gaetan@xeberon.net>
Merge branch 'focus_if_open' of https://github.com/pypingou/guake into pypingou-focus_if_open

Conflicts:
	src/guake

Signed-off-by: Gaetan Semet <gaetan@xeberon.net>
rewriten README in restructedText

Signed-off-by: Gaetan Semet <gaetan@xeberon.net>
doc for ubuntu

Signed-off-by: Gaetan Semet <gaetan@xeberon.net>
note about the magic validator hook

Signed-off-by: Gaetan Semet <gaetan@xeberon.net>
Merge remote-tracking branch 'upstream/master' into local