Bump handlebars from 4.7.3 to 4.7.7

Bumps [handlebars](https://github.com/wycats/handlebars.js) from 4.7.3 to 4.7.7.
- [Release notes](https://github.com/wycats/handlebars.js/releases)
- [Changelog](https://github.com/handlebars-lang/handlebars.js/blob/master/release-notes.md)
- [Commits](https://github.com/wycats/handlebars.js/compare/v4.7.3...v4.7.7)

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -1,6 +1,6 @@
 {
   "name": "distill-template",
-  "version": "2.7.0",
+  "version": "2.8.0",
   "description": "Template for creating Distill articles.",
   "main": "dist/template.v2.js",
   "bin": {
@@ -30,7 +30,6 @@
     "chai": "^3.5.0",
     "eslint": "^4.19.1",
     "eslint-config-google": "^0.9.1",
-    "http-server": "^0.11.1",
     "js-yaml": "^3.13.1",
     "jsdom": "11.3.0",
     "jsdom-global": "3.0.2",
@@ -48,8 +47,7 @@
     "rollup-plugin-uglify": "^1.0.1",
     "rollup-watch": "^4.3.1",
     "should": "^13.2.3",
-    "source-map-support": "^0.5.19",
-    "webpack": "^2.2.1"
+    "source-map-support": "^0.5.19"
   },
   "dependencies": {
     "@webcomponents/webcomponentsjs": "^1.3.3",

src/helpers/bibtex.js

@@ -18,7 +18,8 @@ function normalizeTag(string) {
   return string
     .replace(/[\t\n ]+/g, ' ')
     .replace(/{\\["^`.'acu~Hvs]( )?([a-zA-Z])}/g, (full, x, char) => char)
-    .replace(/{\\([a-zA-Z])}/g, (full, char) => char);
+    .replace(/{\\([a-zA-Z])}/g, (full, char) => char)
+    .replace(/[{}]/gi,'');  // Replace curly braces forcing plaintext in latex.
 }
 
 export function parseBibtex(bibtex) {