RecoveryWidget: Switch positions of buttons.

Buttons now match Firefox.
Start new session is first and then Restore.
Fixed opening popup windows with QtWebKit 2.3

It now correctly opens new tab / popup window
according to arguments in window.open call.
File scheme handler: Sorting files case insensitive.
Fix possible crash on startup.

Don't calculate space for tab if the available
space is negative.
Ask user to allow site to use notifications/geolocation.

With option to remmber the choice for page.
Removed USE_QTWEBKIT_2_2 build variable.

It will now be automatically detected.
It assume that if you are building with Qt 4.8 and higher,
you have QtWebKit 2.2 and higher.
[Windows] fixed: open folder and select downloaded file (using ShellExecute for run explorer).
-Now it covers all possible situations (e.g. path with spaces, file without extention, ...)
Update .gitignore, ignoring manifest file.
[Windows] fixed include conflicting when defining 'W7TASKBAR'
[Qt5][Windows] Now QupZilla compiles with Qt5 on Windows (msvc).
-There are some issues when enabling blur effect!
Merge pull request #706 from srazi/master

[Qt5][Windows] Added support for compiling QupZilla with Qt5 on Windows (msvc).
Added new macros for checking QTWEBKIT version.

QTWEBKIT_FROM_2_2 - >= 2.2.0
QTWEBKIT_TO_2_2   - < 2.2.0
QTWEBKIT_FROM_2_3 - >= 2.3.0
QTWEBKIT_TO_2_3   - < 2.2.0

It also check whether Qt5 is used and if so, it will
compile all features just like the QtWebKit version
was 2.3.0
Coding style.
Properly fixed opening popup windows for QtWebKit 2.3

The workaround is now only used for QtWebKit 2.3 and
it checks only for x, widht and height in QRect
Minor changes in scripts.
[Linux theme] New icon for search button in searchbar.

Use "edit-find" icon for theme, if there is no such
icon, the old one will be used.
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