Wrap askbot migration steps in code blocks

Wrap the migration commands for askbot in shell code blocks so that
the HTML formatting is more amenable to cutting and pasting.

Change-Id: I86e3c518daa875551d8a671d7775ad932391f420

specs/migrate_askbot.rst

@@ -129,12 +129,16 @@ Invoke management commands
 The management cli tool is available under /srv/askbot-sites/slot0/config, so
 to invoke management commands you need to enter this directory first.
 
+.. code-block:: bash
+
     $ cd /srv/askbot-sites/slot0/config
     $ python manage.py <command> <args>
 
 Stop celeryd and apache, jetty services
 ---------------------------------------
 
+.. code-block:: bash
+
     $ sudo service askbot-celeryd stop
     $ sudo service apache2 stop
     $ sudo service jetty stop
@@ -144,17 +148,23 @@ Restore database dump
 
 Recreate an empty database:
 
+.. code-block:: bash
+
     $ sudo su - postgres -c 'dropdb askbotdb'
     $ sudo su - postgres -c 'createdb askbotdb --owner=ask'
 
 Restore from backup:
 
+.. code-block:: bash
+
     $ psql -d askbotdb -h localhost -U ask -W -f /path/to/last-dump.sql
 
 `Notice` you will be prompted for the ask_db_password from hiera.
 
 Sync db and migrate:
 
+.. code-block:: bash
+
     $ cd /srv/askbot-sites/slot0/config
     $ sudo python manage.py syncdb
     $ sudo python manage.py migrate
@@ -164,12 +174,16 @@ Sync db and migrate:
 Start celeryd
 -------------
 
+.. code-block:: bash
+
     $ sudo service askbot-celeryd start
     $ sudo service apache2 start
 
 Rebuild solr indexes
 --------------------
 
+.. code-block:: bash
+
     $ sudo service jetty start
     $ cd /srv/askbot-sites/slot0/config
     $ sudo python manage.py askbot_rebuild_index -l en
@@ -177,6 +191,8 @@ Rebuild solr indexes
 
 Test the solr deployment, query string "sahara":
 
+.. code-block:: bash
+
     $ curl "http://127.0.0.1:8983/solr/core-en/select/?fq=django_ct%3A%28askbot.thread%29&rows=10&q=%28sahara%29&start=0&wt=json&fl=%2A+score"
 
 `Notice` this query must return a non-empty resultset.
@@ -184,6 +200,8 @@ Test the solr deployment, query string "sahara":
 Restart celeryd
 ---------------
 
+.. code-block:: bash
+
     $ sudo service askbot-celeryd restart
     $ sudo service apache2 restart
 
@@ -194,6 +212,8 @@ Static files must be extracted into /srv/askbot-sites/slot0/upfiles directory.
 It mostly holds profile pictures, and site logo, so if pictures not showing up
 in the site those files are missing, or have a wrong file permission.
 
+.. code-block:: bash
+
     $ cd /srv/askbot-sites/slot0
     $ sudo rm -rf upfiles
     $ sudo tar xf /path/to/last-upfiles.tar --strip-components=2