AGG/Cairo - fix pattern opacity
fix cairo_renderer usage in demo/viewer + revert aac69d0b34203f856070cfe5bf909fbf84853b7f
update visual tests after fix from 9a1639a1d66
disable font test until #2341 is fixed [skip ci]
Merge branch 'master' of github.com:mapnik/mapnik into jh-min-repeat-distance