Make \big and its relatives use script or scriptscript fonts (although size is still absolute, as it is in TeX) so that it balances the text weight in scripts.  Resolves issue #350.
Bump versions, repack, and recombine previous commit
Handle mlabeledtr in Firefox and other browsers by making a more complicated table with extra columns.
Make the input TeX jax generate mrow+mo rather than mfenced.
Workaround mfenced support for Opera too ; add open/close properties on the element jax generated by the TeX/MathML input jax ; generate mfenced element for <mrow> elements with open/close properties.
Implement rowspacing/columnspacing for the native MathML output, using cell padding.
Some improvements to Davide's work ; make the rowspacing/columnspacing workaround work on Webkit too.
Merge branch 'issue356' into issue359

Conflicts:
	unpacked/jax/output/NativeMML/jax.js
Enable the mlabeledtr workaround for Opera
Rename some variables to follow Davide's convention ; use DOM element interface to browse the table.
Initial implementation of MathJax.Localization. Some experiments with French localization.
Trying to translate more dialogs ; Implement localization of numbers ; Handle arg substitution for arrays.
Implement the general HTML snippets substitution (e.g do the substitution in attributes too) + some small changes.
More attempts to translate messages.
Translation of messages from jax/input/TeX/jax.js
More translations...
Finishing to find all the strings to localize
Update more names to follow our coding style.
Experimental content-mathml extension.
Handle parsing of the <math> source better.