Update tex.rst

fixed: too short =-heading leading to compilation warning
Fix incorrect example for delimiters

Changed incorrect `inlineMath` to `delimiters` in example for `delimiters`
Update installation.rst

Fixed svn checkout for branches
Update installation.rst

fix: https-address for svn access.
Merge pull request #2 from dpvc/patch-1

Fix incorrect example for delimiters
update configuration.rst

fixed typo "ciritical"
fixed: twitter share button

now via mathjax, not via twbootstrap
Update version and copyright
Add AMScd documentation
Fix code mode for \require command
Update google group links to modern versions
Add documentation for localization.
Add information about localization strings for messages and HTML snippets
Add localization-string file left out of previous commit
Fix problem with code reference
Fix typos, add summary of HTML snippets, and add placeholder for localization API (still to be written).
Added what's new in v2.2
Add links to issue tracker items in what's new.
Fixed typo
Added documentation for content-mathml extension.