Changed button styles

Styles for buttons are changed to match user expectations.

app/views/profiles/accounts/show.html.haml

@@ -57,7 +57,7 @@
         %p.light
           = user_url(@user)
         %div
-          = f.submit 'Save username', class: "btn btn-save"
+          = f.submit 'Save username', class: "btn btn-create"
 
   - if show_profile_remove_tab?
     %fieldset.remove-account

app/views/profiles/notifications/show.html.haml

@@ -51,7 +51,7 @@
           %p You will receive all notifications from projects in which you participate
 
   .form-actions
-    = f.submit 'Save changes', class: "btn btn-save"
+    = f.submit 'Save changes', class: "btn btn-create"
 
 .clearfix
   %hr

app/views/profiles/passwords/edit.html.haml

@@ -35,4 +35,4 @@
         .col-sm-10
           = f.password_field :password_confirmation, required: true, class: 'form-control'
       .form-actions
-        = f.submit 'Save password', class: "btn btn-save"
+        = f.submit 'Save password', class: "btn btn-create"