replace the Snap!Cloud with GitHub
Merge branch 'master' of https://github.com/jmoenig/Snap--Build-Your-Own-Blocks
merge Snap!Cloud and GitHub; fix some bugs
show error message when an unlogged user accesses the GitHub project list
prettify error message when not logged in
allow setting a commit message when saving to GitHub
save GitHub project in one file (now media loads properly); make it easier to open projects by other users
add octokit.js as submodule
remove the old directory octokit
update octokit, fix a first-commit bug
prepare for team support
beautify xml
Merge branch 'xml_beautifier' into github_backend
support merging [WIP]
Merge branch 'github_backend' into development