Merge lp://qastaging/~knome/xubuntu-docs/contributor-doc-improvements into lp://qastaging/xubuntu-docs/zesty

contributor-docs/C/common-reference.xml (+2/-2)
contributor-docs/C/development.xml (+1/-0)
contributor-docs/C/documentation-tasks.xml (+47/-0)
contributor-docs/C/documentation-translations.xml (+82/-0)
contributor-docs/C/documentation-working.xml (+37/-0)
contributor-docs/C/documentation.xml (+9/-92)
contributor-docs/C/getting-started.xml (+2/-1)
contributor-docs/C/index.xml (+2/-5)
contributor-docs/C/processes.xml (+1/-0)
contributor-docs/C/qa-bugs.xml (+2/-3)
contributor-docs/C/qa-infra.xml (+73/-0)
contributor-docs/C/qa-team.xml (+0/-136)
contributor-docs/C/qa-tester.xml (+0/-76)
contributor-docs/C/qa-testing.xml (+3/-4)
contributor-docs/C/qa.xml (+138/-0)
contributor-docs/C/strategy-document.xml (+1/-0)
contributor-docs/C/website.xml (+5/-4)
contributor-docs/Makefile (+3/-3)
contributor-docs/libs/xubuntu-contributor.ent (+1/-2)
libs-common/css/style.css (+19/-6)
libs-common/xubuntu-common.ent (+1/-1)
libs-common/xubuntu-docbook-xhtml-contributor.xsl (+35/-0)
libs-common/xubuntu-docbook-xhtml.xsl (+6/-10)
user-docs/C/index.xml (+1/-4)