Merge pull request #61 from AlexanderPico/gh-pages

add drag function to annotation panel
removed dependency on better-css-for-svg
Merge branch 'gh-pages' of https://github.com/wikipathways/pathvisiojs into gh-pages
Merge pull request #8 from wikipathways/gh-pages

update ap:gh-pages with latest work and builds from wp:gh-pages