Modify version number.
Merge branch 'release-1.6.3' into devel
Update basic information.
Integrate Arabic localization.
Integrade Ukrainian localization.
Integrade Hungarian localization.
Integrade Portuguese (Brazil) localization.
Merge branch 'update-info-and-localization' into devel
Move preferences to "extensions.scrapbook." branch (from "scrapbook.") to fit Firefox standard protocol.
Merge branch 'move-pref' into devel
Fix CSS rewrite errors and minimize the intervention on capture or combine.

- Redefine capture option "images": if not checked, CSS-used images are linked to the source URL instead of giving a blank image.
- Add message for imported CSS and inaccessible CSS in the output CSS.
- Fix wrong handling of styles with data URI scheme, "content:" declaration, etc.
Better support HTML5 and fix undesired issues.

- Fix error handling of "background", "bgcolor", "text", etc, attributes for <body>, <table>, etc, elements.
- Redefine capture option "Images": if not checked, the resources linked by <img>, <embed>, <source>, etc, are linked to the original source instead of being removed.
- Redefine capture option "Styles": if not checked, inline styles are not removed now.
- Redefine capture option "JavaScript": if not checked, all related attributes such as "onclick", "onkeydown", etc, in the page are removed.
- Support open graph protocol for meta tags.
- Linked files to be download no more be added to the list in deep capture mode.
- No more record the current form status for privacy concerns.
Minimize the rewrite process on saving a captured page to provide better flexibility.

- Do not overwrite non-UTF-8 encoding, instead give an alert.
- Remove surroundByTags function (replaced with native outerHTML)
- Remove removeAllStyles function
Better support HTML5 in the combiner.

- Fix an issue that background and text attrs in <body> doesn't work.
- Fix an issue that styles in the page are leaked to global scope.
- Optimize the code.
Fix a style scope leak of <link>s and <style>s in the body.
Fix a style scope leak of css with @media declarations.
Merge branch 'fix-rewrite' into devel