[Code] Made all helper functions static.
[Code] qz_ prefixed functions moved to QzTools namespace.
[Windows] Fixed saving files endings with space.
[git-hooks] New hook for checking copyright year.
Moved all cookies settings into Cookies Manager.
Added x-scheme-handler into Linux desktop launcher.

QupZilla will now properly show in "default apps" in
gnome-control-center.

Closes #380
Fix closing Settings tab in Cookies dialog
Final proper fix for showing popup windows with QtWebKit 2.3

Checking only size of popup window as 100x100 is the smallest
possible size.
Fixed loading NYTimes Skimmer page.

https://www.nytimes.com/skimmer/#/Top+News

Implemented applicationCacheQuotaExceeded and databaseQuotaExceeded
slots that increases quotas.
Using clever approach to find username inputs in form.

Saving passwords and usernames should now work for much
more sites.
It now looks for input[type="email"] and inputs without
type attribute too.

Closes #674
Fixed broken Click2Flash from previous commit.

Broken by mistake in e28f9d438e4253a432ae57752a4cb87c682987ae
Added autotests for QzTools helper functions.
[Code] Renamed AutoFillModel + new class PageFormCompleter.
Merge branch 'master' of https://github.com/QupZilla/qupzilla