Issues created in inverted order

Added sort and direction parameters to api.github.com call
Merge pull request #215 from marcofucci/patch-1

Issues created in inverted order
Update installation.rst
 Fix layout
Fix formatting
Fix layout
added 'break' at the end of VirtualHost nginx rewrite rule

The 'break' prevents nginx from going into a redirection loop. So that you don't get the following nginx error "rewrite or internal redirection cycle while processing"
Add syntax info to code-blocks, add linebreaks to HTML
Update to python2.6 to pyhton2.7
Update to Ubuntu 12.04
Remove obsolete install instructions.
Tip for adding custom headers on tests

Explain how to add custom headers for tests based on zope.testbrowser.

Removed a dead link as a bonus.
Merge pull request #217 from gforcada/custom-headers-on-tests

Tip for adding custom headers on tests
=Added instructions to generate security headers and avoid issues with default virtualhost on apache.
Added latest link and Windows missing note
Update installation.rst
RST fixes
Merge branch 'master' of github.com:collective/collective.developermanual
Merge pull request #218 from xiru/master

=Added instructions to generate security headers and avoid issues with d...
Merge branch 'master' of github.com:collective/collective.developermanual