Changes needed in symfony.com

For caution, note and tip : remove class="last" in favor to :last-child
idem about .first
idem for sidebar (the .first css class is not even used in css)
div.section are now removed, so the margin-top needd to go on <hX>
<p> added to .. seealso:: directive
versionadded dom changed
toc level .toctree-lX class has disappeared (was it needed ?)
toc item: link: .internal-reference has gone

Notes

add some format check on references
toc tree bugs whith :glob: (issue opened)
should we print breadcrumb ?
error in main : toctree
<ul> in table = <ul class="first last simple"> why ?
/!\ tip / caution / node / etc... with nested reference
no more colgroup in tables ??
add &nbsp instead of simple space to lines in code blocks
test if there is only one <h1> in each page
we're assuming there is only one toctree per page...
rst does not exist in highlight php
varnish = C ? (highlight php)
RoleDirective ?
IndexDirective ?
toctree maxdepth ?