fix update pledge amount #147
fix error message when pledge amount is too high #129
implement proper access tokens stored in DB
store and synchronize ticket title, status and link

Related to #128.
Implement GET /suggested_issues
log result of the change #137
Clarify license terms
Add commented-out ipython to the plugin for easier debugging
implement GET/; add root project type
implement POST and PUT project
add IP check for creating project (ugly, I know, IPv6 unsupported)
add virtualenv.sh script to gitignore
merge branch 'stable' - committed some changes there by mistake