Split example.org into separate files

... hopefully correctly

This will hopefully improve ease of developing (more granular test results) and
prepares us for adding example org->html renders for gh-pages

org/testdata/blocks.html

@@ -0,0 +1,21 @@
+<div class="captioned">
+<div class="highlight"><pre>echo a bash source block</pre></div>
+<p class="caption">
+block!
+</p>
+</div>
+<div class="highlight"><pre>a source block without a language
+and a second line
+and a third one</pre></div>
+<pre class="example">
+an example block
+with multiple lines
+</pre>
+<blockquote>
+<p>
+Mongodb is very webscale
+</p>
+<p>
+and quote blocks can contain multiple paragraphs
+</p>
+</blockquote>