Merge pull request #241 from duizendnegen/develop

Notebook Stack Deletion, Attachment Clicking, Tags Sorted Alphabetically
Made README.rst "Some errors?" easier to understand.

Added newlines to separate the commands to be executed.
Merged the `killall` and `everpad-provider` command into one line using &&.
Merge pull request #244 from GeertJohan/develop

Made README.rst "Some errors?" easier to understand.
Merge remote-tracking branch 'upstream/develop' into develop