Use jekyll-assets 3 and Bootstrap 3 (cfug#1199)

* Gems

* Move css and sass file to src/_assets

* Base setup for use of Bootstrap 3

* Config overrides so that styles match lavish-bootstrap

* Final cleanup, and undo unnecessary changes

* Plugin to register bootstrap-sass (for Bootstrap 3)

* Fix reference to two_column.css

Author: chalin

_config_now.yml

@@ -0,0 +1,9 @@
+# Fixed time stamp (useful when comparing generated site versions)
+now: 2018-07-01 12:34:56
+
+assets:
+  digest: false
+  source_maps: true
+  compress:
+    css: false
+    js: false

src/_sass/_archive.scss src/_assets/css/_archive.scsssrc/_sass/_archive.scss renamed to src/_assets/css/_archive.scss

@@ -0,0 +1,9 @@
+// Typography
+
+$font-family-monospace: Monaco, Menlo, Consolas, "Courier New", monospace !default;  // Match Lavish settings
+
+// Code
+
+$code-color:   #444; // Match Lavish settings
+$code-bg:   #f0f0f0; // Match Lavish settings
+$pre-color: #77777a; // Match Lavish settings

src/_sass/_base.scss src/_assets/css/_base.scsssrc/_sass/_base.scss renamed to src/_assets/css/_base.scss

@@ -168,6 +168,7 @@ $homepage-illustration-text-break-size: 720px;
         // No need for margin, we don't show sidebar on homepage.
         margin-left: auto;
         width: auto;
+        float: none; // Match Lavish settings
 
         @include media-query($on-palm) {
             padding-left: 0;