Type sanitization for fileopen.php (no more need for character set/HTML-type concerns on htmlentities)

git-svn-id: http://svg-edit.googlecode.com/svn/trunk@2613 eee81c28-f429-11dd-99c0-75d572ba1ddd
Fix data:image/svg link loading for imagelib extension; fix server_opensave-extension-opened SVG files for older browsers; leverage utilities base 64 encoding in place of btoa also in server_opensave extension

git-svn-id: http://svg-edit.googlecode.com/svn/trunk@2614 eee81c28-f429-11dd-99c0-75d572ba1ddd
Making tabbing consistent

git-svn-id: http://svg-edit.googlecode.com/svn/trunk@2615 eee81c28-f429-11dd-99c0-75d572ba1ddd
Avoid duplicate sliders when switching between WEBP and JPEG (thanks adrianbjones for the report!); fix tabs

git-svn-id: http://svg-edit.googlecode.com/svn/trunk@2616 eee81c28-f429-11dd-99c0-75d572ba1ddd
Filter out bad MIME types from fileopen.php and share allowable array with filesave.php

git-svn-id: http://svg-edit.googlecode.com/svn/trunk@2617 eee81c28-f429-11dd-99c0-75d572ba1ddd
- full translation

git-svn-id: http://svg-edit.googlecode.com/svn/trunk@2618 eee81c28-f429-11dd-99c0-75d572ba1ddd
- now You can choose polish translation in "Editor options"

git-svn-id: http://svg-edit.googlecode.com/svn/trunk@2619 eee81c28-f429-11dd-99c0-75d572ba1ddd