Change title and site name separator in <title> tag

Close #27

templates/404.html

@@ -1,7 +1,7 @@
 {% extends "base.html" %}
 
 {% block title %}
-Page not found - {{ super() }}
+Page not found · {{ super() }}
 {% endblock title %}
 
 {% block head_description %}

templates/archives.html

@@ -1,6 +1,6 @@
 {% extends "base.html" %}                                                                                                                                                                                  
 {% block title %}
-All Posts - {{ super() }}
+All Posts · {{ super() }}
 {% endblock title %}
 
 {% block head_description %}

templates/article.html

@@ -1,7 +1,7 @@
 {% extends "base.html" %}
 
 {% block title %}
-{{ article.title }} - {{ super() }}
+{{ article.title }} · {{ super() }}
 {% endblock title %}
 
 {% block head_description %}

templates/categories.html

@@ -1,7 +1,7 @@
 {% extends "base.html" %}
 
 {% block title %}
-All Categories - {{ super() }}
+All Categories · {{ super() }}
 {% endblock title %}
 
 {% block head_description %}

templates/page.html

@@ -1,7 +1,7 @@
 {% extends "base.html" %}
 
 {% block title %}
-{{ page.title }} - {{ super() }}
+{{ page.title }} · {{ super() }}
 {% endblock title %}
 
 {% block head_description %}

templates/search.html

@@ -1,7 +1,7 @@
 {% extends "base.html" %}
 
 {% block title %}
-Search - {{ super() }}
+Search · {{ super() }}
 {% endblock title %}
 
 {% block head_links %}

templates/tags.html

@@ -1,7 +1,7 @@
 {% extends "base.html" %}
 
 {% block title %}
-All Tags - {{ super() }}
+All Tags · {{ super() }}
 {% endblock title %}
 
 {% block head_description %}