python: allow export as dict
added python server
made cherrypy a usable default server; set correct response status on clone failure
bower update, ammended gitignore
refactoring git helper to be OOP, already using pygit2
use libgit2 for get_all_commits
ported git_commit_data to libgit2
ported get_branch_heads to libgit2
fix bug wrt multiple parents
saved dependencies to bower.json
set charset
we need only one width per time
popover ---> tooltip, so that HTML can be injected
access hashsum, instead of commit object
show URL too
githelper can now whitelist repos
avoid unnecessary cloning
make checking for diryness possible
super simple cache for git graph
fix typo