do detection only once
Fix a bug for ticket #5282
refs #5273 make sure to use theme color instead of hardcoded value
refs #4872 this should fix getPageUrl returns same results for several day when a range is used. Waiting to see which tests fail. In this case date always equaled to "2014-03-11,2014-03-18" for each subtable/day
Merge pull request #302 from LGarciaSpherexx/bugfix

Fixes #5282 
Thanks for the pull request! could you please let me know, in case you have not tested this change?
Enabling Python 2.6 on Travis CI
refs: https://github.com/piwik/piwik/pull/300
source: http://askubuntu.com/questions/125342/how-can-i-install-python-2-6-on-12-04
Remove comment
Merge remote-tracking branch 'origin/master'
Assume Yes to all queries to prevent stalled build
eg https://travis-ci.org/piwik/piwik/jobs/26724811
Is python2.6 available?
Make the X-UA-Compatible consistent across piwik codebase
Refs https://github.com/piwik/piwik/pull/302
refs #5282
On Travis CI test server, use Python 2.6, since this is our minimum supported version
(best practise is to test at least the minimum supported version)

Refs https://github.com/piwik/piwik/pull/300
Submodule
fixes #5268 the plus character needs to be url encoded otherwise it will not be visible as it is reserved by RFC2396. Other characters work fine
Merge branch 'master' into DeviceDetector2