[visualize/editor] do not overwrite the vis state unless the vis changed
add default query to the visualize app state
[visualize/wizard] display vistypes in alphabetical order
Merge pull request #1827 from spenceralger/prevent-1777

Don't upset vis state if not necessary
[visualize/wizard] switch to title order, not name order
Merge pull request #1834 from w33ble/fix/default-query

Add default query to the visualize app state
[visualize/editor/visParams] always show the vis params if there are no aggConfigs
[plugins] include the readme warning in the plugins directory of the build