Using unix line ends in COPYRIGHT.

Closes #767
Updated Polish translation for windows installer.
[SiteInfo] Use uniform item sizes in list widget.

Also fixed showing the whole item on Windows.
Preferences: Adjust size to current page on page change.
[code] Explicitly set UTF-8 codec when using QTextStream.

Fixes encoding issues on Windows.

Closes #769
[Mac] Fixed rendering of tab's buttons.
[Mac] RSSManager/AdBlockDialog documentMode was disabled and fixed double cursor problem.
Added 'MacToolButton' as a replacement for QToolButton on Mac
Moved config directory info ~/.config/qupzilla

See #774
Merge pull request #773 from srazi/Mac_work

Mac related fixes.
IconProvider: fixed, return a fallback icon on non-linux OSes
[FTP] fixed problem with 'link to file'+show shortcut icon for links
LocationBar: Fixed drawing cursor at correct position with popup opened.
Used qIconProvider instead of  QFileIconProvider() and removed msgHandler on Windows.
Merge pull request #777 from srazi/master

[FTP] fixed problem with 'link to file'+show shortcut icon for links
Don't show context menu on scrollbars.

Also fixed coding style in mactoolbutton.cpp
[LocationCompleter] Fixes performance when drawing really long urls.

data: urls can get really long (> 1000000 characters), so don't save
them in history from now on.
X11: Symlink qupzilla/tmp into /tmp
[Win] FileSchemeHandler: fixed issues with '*.lnk' and 'x:'
Merge pull request #778 from srazi/master

[Win] FileSchemeHandler: fixed issues with '*.lnk' and 'x:'