Add join existing party button

common/locales/en/groups.json

@@ -25,6 +25,7 @@
     "noPartyText": "You are either not in a party or your party is taking a while to load. You can either create one and invite friends, or if you want to join an existing party, have them enter your Unique User ID below and then come back here to look for the invitation:",
     "LFG": "To advertise your new party or find one to join, go to the <%= linkStart %>Party Wanted (Looking for Group)<%= linkEnd %> Guild.",
     "wantExistingParty": "Want to join an existing party? Go to the <%= linkStart %>Party Wanted Guild<%= linkEnd %> and post this User ID:",
+    "joinExistingParty": "Join Someone Else's Party",
     "create": "Create",
     "userId": "User ID",
     "invite": "Invite",

website/views/options/social/party/start-a-party.jade

@@ -18,5 +18,6 @@
     h4=env.t('wantToStartParty')
 
   .row.row-margin
-    span.btn.btn-primary(ng-click='inviteOrStartParty(group)')=env.t('inviteFriendsNow')
-    span.btn.btn-default(ng-click='create(newGroup); group.loadingNewParty = true')=env.t('inviteFriendsLater')
+    .btn.btn-primary(ng-click='inviteOrStartParty(group)')=env.t('inviteFriendsNow')
+    .btn.btn-default(ng-click='create(newGroup); group.loadingNewParty = true')=env.t('inviteFriendsLater')
+    .btn.btn-default(ng-click='openModal("user-id")') Join Someone Else's Party

website/views/shared/modals/invite-friends.jade

@@ -107,4 +107,14 @@ script(type='text/ng-template', id='modals/invite-party.html')
     .modal-footer(style='padding-bottom:0',ng-if='!group._id || group.memberCount < 2')
       p!=env.t('wantExistingParty', {linkStart: "<a href='/#/options/groups/guilds/f2db2a7f-13c5-454d-b3ee-ea1f5089e601'>", linkEnd: "</a>"})
       pre(style='margin:1em 0 0 0').
-        {{user.id}}
+        {{::user._id}}
+
+script(type='text/ng-template', id='modals/user-id.html')
+  .modal-header
+    h4=env.t('userId')
+  .modal-body
+    p!=env.t('wantExistingParty', {linkStart: "<a href='/#/options/groups/guilds/f2db2a7f-13c5-454d-b3ee-ea1f5089e601'>", linkEnd: "</a>"})
+    pre(style='margin:1em 0 0 0').
+      {{::user._id}}
+  .modal-footer
+    .btn.btn-default.pull-right(ng-click='$close()')=env.t('close')