Change widget syntax to `$` instead of underscore

eg `<$list>`

core/modules/parsers/wikiparser/rules/html.js

@@ -10,9 +10,9 @@ Wiki rule for HTML elements and widgets. For example:
 This is an HTML5 aside element
 </aside>
 
-<_slider target="MyTiddler">
+<$slider target="MyTiddler">
 This is a widget invocation
-</_slider>
+</$slider>
 
 }}}
 
@@ -31,7 +31,7 @@ var voidElements = "area,base,br,col,command,embed,hr,img,input,keygen,link,meta
 exports.init = function(parser) {
 	this.parser = parser;
 	// Regexp to match
-	this.matchRegExp = /<(_)?([A-Za-z]+)(\s*[^>]*?)(\/)?>/mg;
+	this.matchRegExp = /<(\$)?([A-Za-z]+)(\s*[^>]*?)(\/)?>/mg;
 };
 
 /*
@@ -78,7 +78,7 @@ exports.parse = function() {
 		isBlock = false;
 	}
 	if(!isSelfClosing && (isWidget || voidElements.indexOf(tagName) === -1)) {
-		var reEndString = "(</" + (isWidget ? "_" : "") + tagName + ">)",
+		var reEndString = "(</" + (isWidget ? "\\$" : "") + tagName + ">)",
 			reEnd = new RegExp(reEndString,"mg"),
 			content;
 		if(isBlock) {

core/templates/PageTemplate.tid

@@ -1,7 +1,7 @@
 title: $:/templates/PageTemplate
 
 <!-- The navigator catches navigation events and updates the story and history tiddlers -->
-<_navigator story="$:/StoryList" history="$:/HistoryList">
+<$navigator story="$:/StoryList" history="$:/HistoryList">
 
 <!-- The top navigation bar -->
 <div class="navbar navbar-fixed-top">
@@ -23,15 +23,15 @@ title: $:/templates/PageTemplate
 <div class="span2">
 <div style="position:fixed;">
 <!-- The navigation menu -->
-<_list filter="[list[$:/StoryList]]" history="$:/HistoryList" editTemplate="$:/templates/EditTemplate" listview=classic itemClass="tw-menu-list-item"/>
+<$list filter="[list[$:/StoryList]]" history="$:/HistoryList" editTemplate="$:/templates/EditTemplate" listview=classic itemClass="tw-menu-list-item"/>
 </div>
 </div>
 <div class="span10">
 <!-- The main display -->
-<_list filter="[list[$:/StoryList]]" history="$:/HistoryList" template="$:/templates/ViewTemplate" editTemplate="$:/templates/EditTemplate" listview=classic itemClass="tw-tiddler-frame"/>
+<$list filter="[list[$:/StoryList]]" history="$:/HistoryList" template="$:/templates/ViewTemplate" editTemplate="$:/templates/EditTemplate" listview=classic itemClass="tw-tiddler-frame"/>
 </div>
 </div>
 </div>
 
-</_navigator>
+</$navigator>
 

core/templates/StaticContent.tid

@@ -2,6 +2,6 @@ title: $:/templates/StaticContent
 type: text/vnd.tiddlywiki
 
 <!-- For Google, and people without JavaScript-->
-<_list filter="[!is[shadow]sort[title]]" >
+<$list filter="[!is[shadow]sort[title]]" >
-<_view field="title" format="text"></_view>
+<$view field="title" format="text"></$view>
-</_list>
+</$list>

core/templates/TagTemplate.tid

@@ -1,5 +1,5 @@
 title: $:/templates/TagTemplate
 
 @@.label
-<_view field="title" format="text" />
+<$view field="title" format="text" />
 @@

core/templates/ViewTemplate.tid

@@ -2,18 +2,18 @@ title: $:/templates/ViewTemplate
 modifier: JeremyRuston
 
 <span class="title">
-	<_view field="title"/>
+	<$view field="title"/>
-	<_button message="tw-close">close</_button>
+	<$button message="tw-close">close</$button>
 </span>
 
 <div class="small">
-	<_view field="modifier" format="link"/>
+	<$view field="modifier" format="link"/>
-	<_view field="modified" format="date"/>
+	<$view field="modified" format="date"/>
 </div>
 
-@@.tw-tags-wrapper <_list filter="[is[current]tags[]]" template="$:/templates/TagTemplate" />@@
+@@.tw-tags-wrapper <$list filter="[is[current]tags[]]" template="$:/templates/TagTemplate" />@@
 
 <div class="body">
-	<_view field="text" format="wikified">
+	<$view field="text" format="wikified">
-	</_view>
+	</$view>
 </div>

core/templates/css-tiddler.tid

@@ -4,4 +4,4 @@ title: $:/core/templates/css-tiddler
 
 This template is used for saving CSS tiddlers as a style tag with data attributes representing the tiddler fields.
 
--->`<style`<_fields template=' data-tiddler-$name$="$encoded_value$"'></_fields>` type="text/css">`<_view field="text" format="text" />`</style>`
+-->`<style`<$fields template=' data-tiddler-$name$="$encoded_value$"'></$fields>` type="text/css">`<$view field="text" format="text" />`</style>`

core/templates/html-div-tiddler.tid

@@ -4,6 +4,6 @@ title: $:/core/templates/html-div-tiddler
 
 This template is used for saving tiddlers as an HTML DIV tag with attributes representing the tiddler fields.
 
--->`<div`<_fields template=' $name$="$encoded_value$"'></_fields>`>
+-->`<div`<$fields template=' $name$="$encoded_value$"'></$fields>`>
-<pre>`<_view field="text" format="htmlencoded" />`</pre>
+<pre>`<$view field="text" format="htmlencoded" />`</pre>
 </div>`

core/templates/html-tiddler.tid

@@ -4,4 +4,4 @@ title: $:/core/templates/html-tiddler
 
 This template is used for saving tiddlers as raw HTML
 
---><_view field="text" format="htmlwikified" />
+--><$view field="text" format="htmlwikified" />

core/templates/javascript-tiddler.tid

@@ -4,4 +4,4 @@ title: $:/core/templates/javascript-tiddler
 
 This template is used for saving JavaScript tiddlers as a script tag with data attributes representing the tiddler fields.
 
--->`<script`<_fields template=' data-tiddler-$name$="$encoded_value$"'></_fields>` type="text/javascript">`<_view field="text" format="text" />`</script>`
+-->`<script`<$fields template=' data-tiddler-$name$="$encoded_value$"'></$fields>` type="text/javascript">`<$view field="text" format="text" />`</script>`

core/templates/module-tiddler.tid

@@ -4,5 +4,5 @@ title: $:/core/templates/module-tiddler
 
 This template is used for saving JavaScript tiddlers as a script tag with data attributes representing the tiddler fields. The body of the tiddler is wrapped in a call to the `$tw.modules.define` function in order to define the body of the tiddler as a module
 
--->`<script`<_fields template=' data-tiddler-$name$="$encoded_value$"'></_fields>` type="text/javascript" data-module="yes">$tw.modules.define("`<_view field="title" format="jsencoded" />`","`<_view field="module-type" format="jsencoded" />`",function(module,exports,require) {`<_view field="text" format="text" />`});
+-->`<script`<$fields template=' data-tiddler-$name$="$encoded_value$"'></$fields>` type="text/javascript" data-module="yes">$tw.modules.define("`<$view field="title" format="jsencoded" />`","`<$view field="module-type" format="jsencoded" />`",function(module,exports,require) {`<$view field="text" format="text" />`});
 </script>`

core/templates/plain-text-tiddler.tid

@@ -1,3 +1,3 @@
 title: $:/core/templates/plain-text-tiddler
 
-<_view field="text" format="text" />
+<$view field="text" format="text" />