fix(thread): fix bug whereby thread list blows up if no "from"

internal_packages/thread-list/lib/thread-list-icon.cjsx

@@ -24,7 +24,7 @@ class ThreadListIcon extends React.Component
     msgs = @_nonDraftMessages()
     last = msgs[msgs.length - 1]
 
-    if msgs.length > 1 and last.from[0].isMe()
+    if msgs.length > 1 and last.from[0]?.isMe()
       if Utils.isForwardedMessage(last)
         return 'thread-icon-forwarded'
       else

internal_packages/thread-list/lib/thread-list-participants.cjsx

@@ -70,9 +70,12 @@ class ThreadListParticipants extends React.Component
         else # check adjacent email uniqueness
           last = msgs[i - 1][toOrFrom][0]
           curr = msgs[i][toOrFrom][0]
-          isUniqueEmail = last.email.toLowerCase() isnt curr.email.toLowerCase()
-          isUniqueName = last.name isnt curr.name
-          isUniqueEmail or isUniqueName
+          if last and curr
+            isUniqueEmail = last.email.toLowerCase() isnt curr.email.toLowerCase()
+            isUniqueName = last.name isnt curr.name
+            isUniqueEmail or isUniqueName
+          else
+            return false
 
     makeMetadataMapper = (toOrFrom) ->
       (msg) ->

src/flux/stores/event-store.coffee

@@ -7,7 +7,7 @@ DatabaseStore = require './database-store'
 NamespaceStore = require './namespace-store'
 _ = require 'underscore'
 
-EventRSVP = require '../tasks/event-rsvp'
+EventRSVPTask = require '../tasks/event-rsvp'
 
 {Listener, Publisher} = require '../modules/reflux-coffee'
 CoffeeHelpers = require '../coffee-helpers'
@@ -44,7 +44,7 @@ class EventStore extends NylasStore
     @__refreshCache()
 
   _onRSVPEvent: (calendar_event, RSVPStatus) ->
-    task = new EventRSVP(calendar_event, RSVPStatus)
+    task = new EventRSVPTask(calendar_event, RSVPStatus)
     Actions.queueTask(task)
 
   __refreshCache: =>