[CRX] Fall back to sender.tab.url if !tab.url

sender.url is relatively new (Chromium 29)
 ( https://chromiumcodereview.appspot.com/14301016 )
[CRX] Remove redundant location.origin check

The PDF Viewer will always be rendered directly from the extension,
so checking "origin == chrome-extension:/.." is not needed any more.
( since edd4bae903c36048b7d4d4bed393e4408d0198ba )
Register as File browser handler in Chrome OS
Firefox addon: Let XHR respect private mode
Rewrite Lexer_getNumber.
Now, it computes the numbers with only basic arithmetic operations, without first creating a string and then calling parseFloat.
The new function doesn't behave exactly the same as the old one.
In particular, the old behaviour was that when there was a number immediatly followed by an 'E', the 'E' was consumed. Now it's not. It allows for "glued" numbers and operators.
Also, the new function is faster and consumes less memory.
Add @lovasoa to AUTHORS
Remove inline script warnings.
Backport latest zh-TW strings from l10n-aurora
Do not switch to a range request for small PDFs
Change test font to one that works with ttx v2.4.
Update ja locale
Bug 972435 - Recompress all PNG assets
Update cs locale
Corrected word spelling
Update cs locale
Fix for bind compatibility implementation (polyfill).

Previously, reconstruction of arguments was incorrect if arguments contained
arrays. Arrays were added to arguments as their elements and not as a whole
array. It is enough to simply pass whole array to concat and it will be (only
one level deep) added to arguments.

In addition, we call slice on arguments for maximum compatibility (it is used
in Underscore.js library, with which I was comparing implementations while
debugging).
Handle undefined url in LinkAnnotation
Info function does not interpolate strings.
jpgjs performance tuning