removed \medskip and \rond

app/controllers/home.controller.js

                 {
                     return "\\(" + $2 + "\\)";
                 }).replace(/\\medskip/g, "")
+                    .replace(/\\bigskip/g, "")
+                    .replace(/\\rond/g, "")
                     .replace(/\\begin\{.*\}/g, "")
                     .replace(/\\end\{.*\}/g, "")
                     .replace(/\n|\r|\r\n|\n\r/g, " ")