Legacy renderer (#1184)

* Include two versions of Marked.js

* Include two versions of Marked.js

* Working two different render pipelines

Adds stylesheet "styleLegacy.less"
Adds markdownHandler "markdownLegacy.js"
The BrewRenderer will switch between these and the new pipeline dependent on the "version" prop passed in.

* Mustache-style div blocks

* Legacy snippets & columnbreak

* Codemirror styling for Div Blocks

* Lint

* Codemirror highlights for inline Divs as well

These will turn red `{{class Content}}`

Multi-line divs will turn purple

```
{{class,class2
content
}}
```

No real need for these to be different colors. Just for testing.

* More lint

* Update dependencies.

* Adding Button to switch render pipelines

* Update Marked.js

* Popup alert to refresh page when renderer changed

* Don't compress files in Development (very slow)

* Block DIV or inline Span depending on {{ placement

* \column emits a Div instead of Span

* Allow share page to use new renderer

* {{ divs no longer need empty lines. Spans work in lists.

* Typo

* Typo

* Enforce \page must be at start of line. Code cleanup.

* Inject newlines after/before {{/}} to avoid needing blank lines

* Fixes issues with tables.

* Remove console.log

* Fix spacing issue for Spans

* Move things from Brewrenderer to Markdown

Try to keep all custom text fiddling in one spot.

* Rename variables

* Update Font-Awesome to v5.15. Fix style issues on popups.

* Update {{ Divs/Spans, Fix nested hilighting

* Fixed Spans/divs with no tags or just commas

* Use blacklist for {{ to allow more characters

* Update package-lock.json

* Update all icons to Font-awesome 5

* V3 hidden behind config variable

Add "globalThis.enable_v3 = true" in the console to enable.

* lint

client/homebrew/editor/snippetbar/snippetsLegacy/tableOfContents.gen.js

@@ -0,0 +1,72 @@
+const _ = require('lodash');
+
+const getTOC = (pages)=>{
+	const add1 = (title, page)=>{
+		res.push({
+			title    : title,
+			page     : page + 1,
+			children : []
+		});
+	};
+	const add2 = (title, page)=>{
+		if(!_.last(res)) add1('', page);
+		_.last(res).children.push({
+			title    : title,
+			page     : page + 1,
+			children : []
+		});
+	};
+	const add3 = (title, page)=>{
+		if(!_.last(res)) add1('', page);
+		if(!_.last(_.last(res).children)) add2('', page);
+		_.last(_.last(res).children).children.push({
+			title    : title,
+			page     : page + 1,
+			children : []
+		});
+	};
+
+	const res = [];
+	_.each(pages, (page, pageNum)=>{
+		const lines = page.split('\n');
+		_.each(lines, (line)=>{
+			if(_.startsWith(line, '# ')){
+				const title = line.replace('# ', '');
+				add1(title, pageNum);
+			}
+			if(_.startsWith(line, '## ')){
+				const title = line.replace('## ', '');
+				add2(title, pageNum);
+			}
+			if(_.startsWith(line, '### ')){
+				const title = line.replace('### ', '');
+				add3(title, pageNum);
+			}
+		});
+	});
+	return res;
+};
+
+module.exports = function(brew){
+	const pages = brew.split('\\page');
+	const TOC = getTOC(pages);
+	const markdown = _.reduce(TOC, (r, g1, idx1)=>{
+		r.push(`- **[${idx1 + 1} ${g1.title}](#p${g1.page})**`);
+		if(g1.children.length){
+			_.each(g1.children, (g2, idx2)=>{
+				r.push(`  - [${idx1 + 1}.${idx2 + 1} ${g2.title}](#p${g2.page})`);
+				if(g2.children.length){
+					_.each(g2.children, (g3, idx3)=>{
+						r.push(`    - [${idx1 + 1}.${idx2 + 1}.${idx3 + 1} ${g3.title}](#p${g3.page})`);
+					});
+				}
+			});
+		}
+		return r;
+	}, []).join('\n');
+
+	return `<div class='toc'>
+##### Table Of Contents
+${markdown}
+</div>\n`;
+};