[#361] Improve search result page (#375)

* [#361] added back button

* [#361] greatly improved looks of results

* [#361] added popup on click

* [#361] removed classnames with \!important replaced with style in component

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Co-authored-by: Camille Moussu <cmoussu@linagora.com>

src/locales/en.json

@@ -62,8 +62,9 @@
     "keywordsPlaceholder": "Enter keywords",
     "organizers": "Organizers",
     "participants": "Participants",
-    "noResults": "No results found",
-    "resultsTitle": "Search Results"
+    "noResults": "No events found",
+    "resultsTitle": "Search Results",
+    "noResultsSubtitle": "Try adjusting your filters or search terms."
   },
   "calendarPopover": {
     "tabs": {