Chore: Web widget Inbox Tech Debts (#738)

* Chore: Webwidget Inbox Tech Debts

* Additional customization options creating Web Widget
* Changes to edit Page for Web Widget
* Remove the WebWidget API end points
* Minor chores

Address: #680, #502

Co-authored-by: Pranav Raj Sreepuram <pranavrajs@gmail.com>

app/models/channel/web_widget.rb

@@ -2,14 +2,16 @@
 #
 # Table name: channel_web_widgets
 #
-#  id            :integer          not null, primary key
-#  website_name  :string
-#  website_token :string
-#  website_url   :string
-#  widget_color  :string           default("#1f93ff")
-#  created_at    :datetime         not null
-#  updated_at    :datetime         not null
-#  account_id    :integer
+#  id                 :integer          not null, primary key
+#  agent_away_message :string
+#  website_token      :string
+#  website_url        :string
+#  welcome_tagline    :string
+#  welcome_title      :string
+#  widget_color       :string           default("#1f93ff")
+#  created_at         :datetime         not null
+#  updated_at         :datetime         not null
+#  account_id         :integer
 #
 # Indexes
 #
@@ -19,7 +21,6 @@
 class Channel::WebWidget < ApplicationRecord
   self.table_name = 'channel_web_widgets'
 
-  validates :website_name, presence: true
   validates :website_url, presence: true
   validates :widget_color, presence: true
 
@@ -27,10 +28,6 @@ class Channel::WebWidget < ApplicationRecord
   has_one :inbox, as: :channel, dependent: :destroy
   has_secure_token :website_token
 
-  def name
-    'Website'
-  end
-
   def web_widget_script
     "<script>
       (function(d,t) {