Show add comment tooltip to the left when appropriate.

services/web/app/views/project/editor/review-panel.pug

@@ -79,6 +79,7 @@
 						on-submit="submitNewComment(content);"
 						on-cancel="cancelNewComment();"
 						on-indicator-click="toggleReviewPanel();"
+						layout-to-left="reviewPanel.layoutToLeft"
 					)
 
 	.rp-entry-list(
@@ -310,7 +311,7 @@ script(type='text/ng-template', id='addCommentEntryTemplate')
 			ng-if="!commentState.adding"
 			ng-click="startNewComment(); onIndicatorClick();"
 			tooltip="Add a comment"
-			tooltip-placement="right"
+			tooltip-placement="{{ layoutToLeft ? 'left' : 'right' }}"
 			tooltip-append-to-body="true"
 		)
 			i.fa.fa-commenting

services/web/public/coffee/ide/review-panel/directives/addCommentEntry.coffee

@@ -9,6 +9,7 @@ define [
 			onSubmit: "&"
 			onCancel: "&"
 			onIndicatorClick: "&"
+			layoutToLeft: "="
 		link: (scope, element, attrs) ->
 			scope.state =
 				isAdding: false