Fixed composer progress on small height

Closes #1064

app/js/directives.js

@@ -1533,7 +1533,7 @@ angular.module('myApp.directives', ['myApp.filters'])
         }
       });
 
-      var richTextarea = composer.richTextareaEl[0];
+      var richTextarea = composer.richTextareaEl && composer.richTextareaEl[0];
       if (richTextarea) {
         $(richTextarea).on('keydown keyup', updateHeight);
       }

app/js/message_composer.js

@@ -1116,6 +1116,9 @@ MessageComposer.prototype.onRichPaste = function (e) {
 }
 
 MessageComposer.prototype.cleanRichTextarea = function (value, focused) {
+  if (!this.richTextareaEl[0]) {
+    return;
+  }
   if (value === undefined) {
     value = getRichValue(this.richTextareaEl[0]);
   }

app/less/app.less

@@ -2572,21 +2572,18 @@ img.img_fullsize {
 }
 
 /* Message composer */
-.composer_progress_icon {
-  display: block;
+.composer_progress_icon_wrap {
   opacity: 0;
   position: absolute;
   right: 3px;
   top: 2px;
-  cursor: pointer;
-  padding: 0;
-
   width: 22px;
   height: 22px;
+  overflow: hidden;
   margin-top: 1px;
-  transition: opacity cubic-bezier(0.250, 0.460, 0.450, 0.940) 0.2s;
   pointer-events: none;
-
+  padding: 0;
+  transition: opacity cubic-bezier(0.250, 0.460, 0.450, 0.940) 0.2s;
   .composer_progress_enabled & {
     opacity: 1;
   }

app/less/desktop.less

@@ -1249,6 +1249,12 @@ a.im_panel_peer_photo .peer_initials {
       padding-right: 25px;
     }
 
+    &_progress_icon_wrap {
+      top: 0;
+      right: 0;
+      margin-top: 0;
+    }
+
     &_emoji_insert_btn {
       top: 0;
       right: 0px;

app/partials/desktop/im.html

@@ -198,7 +198,9 @@
 
                     <div class="im_send_field_wrap hasselect" ng-class="historyState.replyKeyboard._ == 'replyKeyboardMarkup' ? 'im_send_field_wrap_2ndbtn' : ''">
                       <a class="composer_emoji_insert_btn"><i class="icon icon-emoji"></i></a>
+                      <div class="composer_progress_icon_wrap">
                         <div class="composer_progress_icon" my-arc-progress width="22" stroke="2.5"></div>
+                      </div>
                       <a class="composer_command_btn" ng-show="!historyState.replyKeyboard && commands.list.length > 0 && (!draftMessage.text.length || draftMessage.text[0] == '/')" ng-mousedown="toggleSlash($event)" ng-class="draftMessage.text[0] == '/' ? 'active' : ''"><i class="icon icon-slash"></i></a>
                       <a class="composer_keyboard_btn" ng-show="historyState.replyKeyboard._ == 'replyKeyboardMarkup'" ng-mousedown="replyKeyboardToggle($event)" ng-class="!historyState.replyKeyboard.pFlags.hidden ? 'active' : ''"><i class="icon icon-keyboard"></i></a>