Add data/ folder to setup.py, manifest install configs

Author: smartin015

MANIFEST.in

@@ -2,3 +2,4 @@ include README.md
 recursive-include continuousprint/templates *
 recursive-include continuousprint/translations *
 recursive-include continuousprint/static *
+recursive-include continuousprint/data *

setup.py

@@ -43,7 +43,7 @@
 # already be installed automatically if they exist. Note that if you add something here you'll also need to update
 # MANIFEST.in to match to ensure that python setup.py sdist produces a source distribution that contains all your
 # files. This is sadly due to how python's setup.py works, see also http://stackoverflow.com/a/14159430/2028598
-plugin_additional_data = []
+plugin_additional_data = ["continuousprint/data"]
 
 # Any additional python packages you need to install with your plugin that are not contained in <plugin_package>.*
 plugin_additional_packages = []