Consistent header look for setting pages

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

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

 - page_title "Account"
+%h3.page-title
+  = page_title
+%p.light
+  Change your username and basic account settings.
+%hr
 - if current_user.ldap_user?
   .alert.alert-info
     Some options are unavailable for LDAP accounts

app/views/profiles/applications.html.haml

@@ -3,6 +3,7 @@
   = page_title
 %p.light
   OAuth2 protocol settings below.
+%hr
 
 %fieldset.oauth-applications
   %legend Your applications

app/views/profiles/emails/index.html.haml

@@ -2,22 +2,26 @@
 %h3.page-title
   = page_title
 %p.light
+  Control emails linked to your account
+%hr
+
+
+%ul
+  %li
     Your
     %b Primary Email
     will be used for avatar detection and web based operations, such as edits and merges.
-%p.light
+  %li
     Your
     %b Notification Email
     will be used for account notifications.
-%p.light
+  %li
     Your
     %b Public Email
     will be displayed on your public profile.
-%p.light
+  %li
     All email addresses will be used to identify your commits.
 
-%hr
-
 .panel.panel-default
   .panel-heading
     Emails (#{@emails.count + 1})