Lots of changes

- add tags.hbs
- add home.hbs, copy of index.hbs
- change <h1> global font size
 make some animations faster
- make post title & footer background black instead of animated gradient
- make "services" link in navbar white instead of animated gradient
- move some css classes to screen.css to allow tags.hbs accessing them
- fix policy popup being covered (issue #001)
- fix policy popup style
- fig kg-bookmark thumbnail image
- add PT Serif font
- add category and posted date under post title
- move big post cards to post-card-big.hbs, so both index, home and tags can access it
- mode post post cards style to new post-card-style.css file
- update page.hbs, now rendering correctly and including content
- add "l" size to package.json, to allow more high-res images

default.hbs

@@ -23,19 +23,31 @@
       {{#is "post, page"}}
 
         <link rel="stylesheet" type="text/css" href="{{asset "css/page-style.css"}}" />
-        <script src="{{asset "js/remark42-comments.js"}}"></script>
 
           <title>{{meta_title}} – {{@site.title}}</title>
 
       {{/is}}
+      {{#is "post"}}
+        <script src="{{asset "js/remark42-comments.js"}}"></script>
+      {{/is}}
     <!-- End Posts & Pages only code -->
 
+    <!-- Begin Tags only code -->
+    {{# is "tag"}}
+      <link rel="stylesheet" type="text/css" href="{{asset "css/tag-style.css"}}" />
+    {{/is}}
+    <!-- End Tags only code -->
+
     <!-- Begin Index only code -->
       {{#is "index"}}
         <title>{{@site.title}}</title>
 
         <link rel="stylesheet" type="text/css" href="{{asset "css/home-style.css"}}" />
       {{/is}}
+
+      {{#is "index, tag"}}
+              <link rel="stylesheet" type="text/css" href="{{asset "css/post-card-style.css"}}" />
+      {{/is}}
     <!-- End Index only code -->
 
     {{ghost_head}}