Fix comment in bin/pre_compile.
Remove .gitattributes and .travis.yml in rd_ui/.
Remove bin/run from Procfile.heroku.
Update documentation:
-Add a note about upgrading from version to version.
-Remove commands for DATABASE_URL and REDIS_URL.
-Add importance to the cookie secret variable.
-Merge adding redis and postgres addons into 1 step.
Move .bowerrc, bower.json, gulpfile.js, package.json
down to root level.
Update paths in .bowerrc, gulpfile.js, Makefile
Add a heroku-postbuild step to package.json which
installs devDependencies and runs the build.
Add step in bin/pre_compile which adds the
requirements_all_ds.txt to requirements.txt to ensure that
cffi is installed. Also removes pymssql as this is
not supported on Heroku.
Add content from rd_ui/.gitignore to .gitignore and
remove rd_ui/.gitignore.
Add section in setup.rst about Heroku deployments.
This is one huge change for the permissions system and related:
* (Backward incompatible:) Remove the table based permissions in favour of the new model.
* Manage permission to view or query datasources based on groups.
* Add the concept of Organization. It's irrelevant for most deployments, but allows for
multi-tenant support in re:dash.
* Replace ActivityLog with Event based rows (old data in activity_log table is retained).
* Enforce permissions on the server-side. There were some permissions that were only enforced
on the client side. This is no more. All permissions are enforced by the server.
* Added new permission: 'super-admin' to access the status and Flask-Admin interface.
* Make sure that html is never cached by the browser - this is to make sure that the browser
will always ask for the new Javascript/CSS resources (if such are available).
