Make expand/collapse indicator consistent with the one used in filetree.

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

@@ -94,14 +94,14 @@
 				ng-if="reviewPanel.entries[doc.doc.id] | notEmpty"
 				ng-click="reviewPanel.overview.docsCollapsedState[doc.doc.id] = ! reviewPanel.overview.docsCollapsedState[doc.doc.id]"
 			)
+				span.rp-overview-file-header-collapse(
+					ng-class="{ 'rp-overview-file-header-collapse-on': reviewPanel.overview.docsCollapsedState[doc.doc.id] }"
+				)
+					i.fa.fa-angle-right
 				| {{ doc.path }}
 				span.rp-overview-file-num-entries(
 					ng-show="reviewPanel.overview.docsCollapsedState[doc.doc.id]"
 				)  ({{ reviewPanel.entries[doc.doc.id] | numKeys }})
-				span.rp-overview-file-header-collapse(
-					ng-class="{ 'rp-overview-file-header-collapse-on': reviewPanel.overview.docsCollapsedState[doc.doc.id] }"
-				)
-					i.fa.fa-angle-up
 
 			.rp-overview-file-entries(
 				review-panel-collapse-height="reviewPanel.overview.docsCollapsedState[doc.doc.id]"

services/web/public/stylesheets/app/editor/review-panel.less

@@ -578,13 +578,13 @@
 	}
 	.rp-overview-file-header-collapse {
 		display: inline-block;
-		float: right;
+		float: left;
 		transform: rotateZ(0deg);
 		transition: transform 0.15s ease
 	}
 	
 	.rp-overview-file-header-collapse-on {
-		transform: rotateZ(180deg);
+		transform: rotateZ(90deg);
 	}
 
 	.rp-overview-file-entries {