Split a basic Vanilla theme out of Snow White

And add a new Night-Time theme for the /dev wiki.

The idea is that the Vanilla theme will make a more convenient base for
retheming.

editions/dev/tiddlers/system/theme.tid

@@ -0,0 +1,3 @@
+title: $:/theme
+
+$:/themes/tiddlywiki/nighttime

editions/dev/tiddlywiki.info

@@ -5,7 +5,8 @@
 		"tiddlywiki/github-fork-ribbon"
 	],
 	"themes": [
-		"tiddlywiki/snowwhite"
+		"tiddlywiki/nighttime",
+		"tiddlywiki/vanilla"
 	],
 	"includeWikis": [
 		"../tw5.com"

editions/tw5.com/tiddlers/Release 5.0.0alpha16.tid

@@ -13,6 +13,8 @@ tags: releasenote
 
 !! Improvements
 
+* Separated developer content into new wiki at http://five.tiddlywiki.com/dev/
+* Split ''Snow White'' theme into a base ''Vanilla'' theme with all the basic formatting, leaving the decorative bits to ''Snow White''
 * The page building blocks are now driven by the system tag `$:/tags/PageTemplate`
 ** [[$:/TopSideBar]] and [[$:/LeftSideBar]] are no longer specially treated; use the new tag instead
 * Fixed problem that prevented tag configured items from shadow tiddlers interleaving with items from ordinary tiddlers

editions/tw5.com/tiddlers/concepts/DataTiddlers.tid

@@ -27,7 +27,7 @@ The tiddler dictionary format is an alternative syntax for data tiddlers:
 * The ContentType field `type` is set to `application/x-tiddler-dictionary`
 * The `text` field consists of one or more lines of the form `<name>:<value>`
 
-For example, the [[metrics of the Snow White theme|$:/themes/tiddlywiki/snowwhite/metrics]] are a tiddler dictionary.
+For example, the [[metrics of the Vanilla theme|$:/themes/tiddlywiki/vanilla/metrics]] are a tiddler dictionary.
 
 ! Accessing data within data tiddlers
 

editions/tw5.com/tiddlers/system/save-empty.tid

@@ -1,6 +1,6 @@
 title: $:/editions/tw5.com/save-empty
 
 \define saveTiddlerFilter()
-[[$:/core]] [[$:/isEncrypted]] [[$:/plugins/tiddlywiki/fullscreen]] [[$:/themes/tiddlywiki/snowwhite]] -[type[text/css]] -[type[application/javascript]has[module-type]] -[type[application/javascript]library[yes]] -[[$:/boot/boot.js]] -[[$:/boot/bootprefix.js]] +[sort[title]]
+[[$:/core]] [[$:/isEncrypted]] [[$:/plugins/tiddlywiki/fullscreen]] [[$:/themes/tiddlywiki/snowwhite]] [[$:/themes/tiddlywiki/vanilla]] -[type[text/css]] -[type[application/javascript]has[module-type]] -[type[application/javascript]library[yes]] -[[$:/boot/boot.js]] -[[$:/boot/bootprefix.js]] +[sort[title]]
 \end
 {{$:/core/templates/tiddlywiki5.html}}

editions/tw5.com/tiddlers/system/theme.tid

@@ -0,0 +1,3 @@
+title: $:/theme
+
+$:/themes/tiddlywiki/snowwhite

editions/tw5.com/tiddlers/talkytalky/TalkyTalky.tid

@@ -28,7 +28,7 @@ Store your tiddlers in a single HTML file along with the JS
 # Create tiddlers, show links, missing, orphans, tags, tagging, references
 # Use missing tiddlers to find a typo
 # Show shadow tiddlers and system tiddlers
-# Show stylesheet handling - [[$:/themes/tiddlywiki/snowwhite/base]]
+# Show stylesheet handling - [[$:/themes/tiddlywiki/vanilla/base]]
 # Drag an image from the file system
 # Use the image in a tiddler
 # Edit the image

editions/tw5.com/tiddlywiki.info

@@ -5,6 +5,7 @@
 		"tiddlywiki/github-fork-ribbon"
 	],
 	"themes": [
+		"tiddlywiki/vanilla",
 		"tiddlywiki/snowwhite",
 		"tiddlywiki/starlight",
 		"tiddlywiki/stickytitles",