Re-organize profile settings titles and headers

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

app/views/layouts/profile.html.haml

-- page_title    "Profile"
-- header_title  "Profile", profile_path
+- page_title    "Settings"
+- header_title  "Settings", profile_path
 - sidebar       "profile"
 = render template: "layouts/application"

app/views/profiles/applications.html.haml

 - page_title "Applications"
 %h3.page-title
-  Application Settings
+  = page_title
 %p.light
   OAuth2 protocol settings below.

app/views/profiles/design.html.haml

 - page_title "Design"
 %h3.page-title
-  Design Settings
+  = page_title
 %p.light
   Appearance settings will be saved to your profile and made available across all devices.
 %hr

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

 - page_title "Emails"
 %h3.page-title
-  Email Settings
+  = page_title
 %p.light
   Your
   %b Primary Email

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

 - page_title "SSH Keys"
 %h3.page-title
-  SSH Keys Settings
+  = page_title
   .pull-right
     = link_to "Add SSH Key", new_profile_key_path, class: "btn btn-new"
 %p.light

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

 - page_title "Notifications"
 %h3.page-title
-  Notifications Settings
+  = page_title
 %p.light
   These are your global notification settings.
 %hr

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

 - page_title "Password"
-%h3.page-title Password Settings
+%h3.page-title
+  = page_title
 %p.light
   - if @user.password_automatically_set?
     Set your password.

app/views/profiles/show.html.haml

-- page_title "Settings"
+- page_title "Profile"
 %h3.page-title
-  Profile Settings
+  = page_title
 %p.light
   This information will appear on your profile.
   - if current_user.ldap_user?