Turn HTML button on

Added the HTML button to the Editor Toolbar
Move default site creation to Seeds.
Import Dutch strings from OneSky.
Merge pull request #261 from andrewmfraser/patch-1

Turn HTML button on
Merge pull request #263 from churchio/nl-strings

Import Dutch strings from OneSky.
Fix label so Dutch is in Dutch :)
Merge pull request #265 from churchio/rename-nl

Fix label so Dutch is in Dutch :)
Added 1kerk custom styling.