Factor choose group avatar button

app/views/admin/groups/_form.html.haml

@@ -16,13 +16,7 @@
   .form-group.group-description-holder
     = f.label :avatar, "Group avatar", class: 'control-label'
     .col-sm-10
-      %a.choose-btn.btn.btn-small.js-choose-group-avatar-button
-        %i.fa.fa-paperclip
-        %span Choose File ...
-       
-      %span.file_name.js-avatar-filename File name...
-      = f.file_field :avatar, class: "js-group-avatar-input hidden"
-      .light The maximum file size allowed is 100KB.
+      = render 'shared/choose_group_avatar_button', f: f
 
   - if @group.new_record?
     .form-group

app/views/groups/edit.html.haml

@@ -31,13 +31,7 @@
                   You can change your group avatar here
                 - else
                   You can upload a group avatar here
-              %a.choose-btn.btn.btn-small.js-choose-group-avatar-button
-                %i.fa.fa-paperclip
-                %span Choose File ...
-               
-              %span.file_name.js-avatar-filename File name...
-              = f.file_field :avatar, class: "js-group-avatar-input hidden"
-              .light The maximum file size allowed is 100KB.
+              = render 'shared/choose_group_avatar_button', f: f
               - if @group.avatar?
                 %hr
                 = link_to 'Remove avatar', group_avatar_path(@group.to_param), data: { confirm: "Group avatar will be removed. Are you sure?"}, method: :delete, class: "btn btn-remove btn-small remove-avatar"

app/views/groups/new.html.haml

@@ -16,13 +16,7 @@
   .form-group.group-description-holder
     = f.label :avatar, "Group avatar", class: 'control-label'
     .col-sm-10
-      %a.choose-btn.btn.btn-small.js-choose-group-avatar-button
-        %i.fa.fa-paperclip
-        %span Choose File ...
-       
-      %span.file_name.js-avatar-filename File name...
-      = f.file_field :avatar, class: "js-group-avatar-input hidden"
-      .light The maximum file size allowed is 100KB.
+      = render 'shared/choose_group_avatar_button', f: f
 
   .form-group
     .col-sm-2

app/views/shared/_choose_group_avatar_button.html.haml

+%a.choose-btn.btn.btn-small.js-choose-group-avatar-button
+  %i.fa.fa-paperclip
+  %span Choose File ...
+ 
+%span.file_name.js-avatar-filename File name...
+= f.file_field :avatar, class: 'js-group-avatar-input hidden'
+.light The maximum file size allowed is 100KB.