Chore: Parse quoted text in incoming emails (#883) (#884)

* Chore: Parse quoted text in incoming emails (#883)
* Parsed the quoted text and replies in incoming emails and store them separately
* Did this parsing for plain text and html part of emails
* In the chat window, we will only show the parsed reply alone

* Conversation mailbox test fixes (#883)

spec/presenters/mail_presenter_spec.rb

@@ -8,7 +8,7 @@ RSpec.describe MailPresenter do
 
     it 'give utf8 encoded content' do
       expect(decorated_mail.subject).to eq("Discussion: Let's debate these attachments")
-      expect(decorated_mail.content).to eq("Let's talk about these images:\r\n\r\n")
+      expect(decorated_mail.text_content[:full]).to eq("Let's talk about these images:\r\n\r\n")
     end
 
     it 'give decoded blob attachments' do
@@ -24,7 +24,10 @@ RSpec.describe MailPresenter do
 
     it 'give the serialized data of the email to be stored in the message' do
       data = decorated_mail.serialized_data
-      expect(data.keys).to eq([:content, :number_of_attachments, :subject, :date, :to, :from, :in_reply_to, :cc, :bcc, :message_id])
+      expect(data.keys).to eq([
+                                :text_content, :html_content, :number_of_attachments, :subject, :date, :to,
+                                :from, :in_reply_to, :cc, :bcc, :message_id
+                              ])
       expect(data[:subject]).to eq(decorated_mail.subject)
       expect(data[:date].to_s).to eq('2020-04-20T04:20:20-04:00')
       expect(data[:message_id]).to eq(mail.message_id)