login: add /login & /logout routes, rename 'sign in' to 'login'.

* Replace /session/new with /login and /session/sign_out with /logout.
* Rename 'sign in' to 'login'.

This changes are to make urls cleaner and terminology more consistent.

app/views/layouts/_main_links.html.erb

@@ -1,6 +1,6 @@
 <menu id="main-menu" class="main">
   <% if CurrentUser.is_anonymous? %>
-    <%= nav_link_to("Sign in", new_session_path) %>
+    <%= nav_link_to("Login", login_path) %>
   <% else %>
     <%= nav_link_to("My Account #{CurrentUser.dmail_count}", profile_path) %>
   <% end %>

app/views/sessions/new.html.erb

@@ -1,7 +1,7 @@
 <div id="c-sessions">
   <div id="a-new">
     <section>
-      <h1>Sign in</h1>
+      <h1>Login</h1>
 
       <%= simple_form_for(:session, url: session_path) do |f| %>
         <%= f.input :url, as: :hidden, input_html: { value: params[:url] } %>
@@ -17,7 +17,7 @@
 </div>
 
 <% content_for(:page_title) do %>
- Sign in - <%= Danbooru.config.app_name %>
+ Login - <%= Danbooru.config.app_name %>
 <% end %>
 
 <%= render "secondary_links" %>

app/views/static/access_denied.html.erb

@@ -4,7 +4,7 @@
   You do not have permission to visit this page.
 
   <% if CurrentUser.is_anonymous? %>
-    Try <%= link_to "logging in", new_session_path(url: request.fullpath) %> or
+    Try <%= link_to "logging in", login_path(url: request.fullpath) %> or
     <%= link_to "signing up", new_user_path %>.
   <% end %>
 </p>

app/views/static/site_map.html.erb

@@ -118,7 +118,7 @@
       <ul>
         <li><h1>Profile</h1></li>
         <% if CurrentUser.is_anonymous? %>
-          <li><%= link_to "Sign in", new_session_path %></li>
+          <li><%= link_to "Login", login_path %></li>
           <li><%= link_to "Sign up", new_user_path %></li>
         <% else %>
           <li><%= link_to "Profile", profile_path %></li>

app/views/user_upgrades/new.html.erb

@@ -101,7 +101,7 @@
 
     <% if Danbooru.config.stripe_publishable_key %>
       <% if CurrentUser.is_anonymous? %>
-        <p><%= link_to "Sign up", new_user_path %> or <%= link_to "login", new_session_path(url: new_user_upgrade_path) %> first to upgrade your account.</p>
+        <p><%= link_to "Sign up", new_user_path %> or <%= link_to "login", login_path(url: new_user_upgrade_path) %> first to upgrade your account.</p>
       <% elsif CurrentUser.safe_mode? %>
         <%= render "stripe_payment" %>
       <% else %>

app/views/users/_secondary_links.html.erb

@@ -34,6 +34,6 @@
     <% end %>
 
     <li>|</li>
-    <%= subnav_link_to "Sign out", sign_out_session_path %>
+    <%= subnav_link_to "Log out", logout_path %>
   <% end %>
 <% end %>