[#326] fixed attendees preview string + extensive tests (#357)

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

src/locales/en.json

@@ -207,6 +207,8 @@
     "joinVideo": "Join the video conference",
     "guests": "%{count} guests",
     "yesCount": "%{count} yes",
+    "maybeCount": "%{count} maybe",
+    "needActionCount": "%{count} waiting",
     "noCount": "%{count} no",
     "recurrentEvent": "Recurrent Event",
     "freq": {

src/locales/fr.json

@@ -205,8 +205,10 @@
     "showMore": "Afficher plus",
     "showLess": "Afficher moins",
     "joinVideo": "Rejoindre la visioconférence",
-    "guests": "%{count} invités",
+    "guests": "%{count} participants",
     "yesCount": "%{count} oui",
+    "maybeCount": "%{count} peut-être",
+    "needActionCount": "%{count} en attente",
     "noCount": "%{count} non",
     "recurrentEvent": "Événement récurrent",
     "freq": {

src/locales/ru.json

@@ -207,6 +207,8 @@
     "joinVideo": "Присоединиться к видеоконференции",
     "guests": "%{count} гостей",
     "yesCount": "%{count} да",
+    "maybeCount": "%{count} может быть",
+    "needActionCount": "%{count} в ожидании",
     "noCount": "%{count} нет",
     "recurrentEvent": "Повторяющееся событие",
     "freq": {

src/locales/vi.json

@@ -207,6 +207,8 @@
     "joinVideo": "Tham gia cuộc họp video",
     "guests": "%{count} khách",
     "yesCount": "%{count} đồng ý",
+    "maybeCount": "%{count} có thể",
+    "needActionCount": "%{count} đang chờ",
     "noCount": "%{count} từ chối",
     "recurrentEvent": "Sự kiện lặp lại",
     "freq": {