Quick-Search: Added Quick-search in the topbar

Changed how and what we store in elastic to unify it with how we store
things in mongodb so we can have more generic javascript code
to render the data.

Elastic changes:
  Added:
  Node.project.url

  Altered to store id instead of url
  Node.picture

  Made Post searchable

./manage.py elastic reset_index
./manage.py elastic reindex

Thanks to Pablo and Sybren

src/scripts/js/es6/common/quicksearch/MultiSearch.js

@@ -0,0 +1,58 @@
+import {SearchParams} from './SearchParams';
+
+export class MultiSearch {
+    constructor(kwargs) {
+        this.uiUrl = kwargs['uiUrl']; // Url for advanced search
+        this.apiUrl = kwargs['apiUrl']; // Url for api calls
+        this.searchParams = MultiSearch.createMultiSearchParams(kwargs['searchParams']);
+        this.q = '';
+    }
+    
+    setSearchWord(q) {
+        this.q = q;
+        this.searchParams.forEach((qsParam) => {
+            qsParam.setSearchWord(q);
+        });
+    }
+
+    getSearchUrl() {
+        return this.uiUrl + '?q=' + this.q;
+    }
+
+    getAllParams() {
+        let retval = $.map(this.searchParams, (msParams) => {
+            return msParams.params;
+        });
+        return retval;
+    }
+
+    parseResult(rawResult) {
+        return $.map(rawResult, (subResult, index) => {
+            let name = this.searchParams[index].name;
+            let pStr = this.searchParams[index].getParamStr();
+            let result = $.map(subResult.hits.hits, (hit) => {
+                return hit._source;
+            });
+            return {
+                name: name,
+                url: this.uiUrl + '?' + pStr,
+                result: result,
+                hasResults: !!result.length
+            };
+        });
+    }
+
+    thenExecute() {
+        let data = JSON.stringify(this.getAllParams());
+        let rawAjax = $.getJSON(this.apiUrl, data);
+        let prettyPromise = rawAjax.then(this.parseResult.bind(this));
+        prettyPromise['abort'] = rawAjax.abort.bind(rawAjax); // Hack to be able to abort the promise down the road
+        return prettyPromise;
+    }
+
+    static createMultiSearchParams(argsList) {
+        return $.map(argsList, (args) => {
+            return new SearchParams(args);
+        });
+    }
+}