Fix error in ru_RU.ts
Merge pull request #711 from Longer/fix_translation

Fix error in ru_RU.ts
Added Ctrl+F4 shortcut to close current tab.
Limit height of image in PageScreen to prevent crash.

Closes #608
Fixed using new icon for search button.
Proper fix for #608 saving page screen.

It now split the page by 20000 pixels and render it.
Images are then saved on disk in parts.
[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