Re-organise

Signed-off-by: Oliver Davies <oliver@oliverdavies.uk>

php-south-wales-intro-slides/2021-09/slides.rst

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+.. image:: images/logo.jpeg
+    :width: 10cm
+
+.. raw:: pdf
+
+    PageBreak
+
+.. image:: images2/phpsa.png
+    :width: 10cm
+
+.. raw:: pdf
+
+    PageBreak
+
+.. image:: images/twilio.png
+    :width: 12cm
+
+.. raw:: pdf
+
+    PageBreak
+
+.. image:: images/lexis-nexis.jpg
+    :width: 12cm
+
+.. raw:: pdf
+
+    PageBreak
+
+.. image:: images/oliver-davies.jpg
+    :width: 12cm
+
+.. page:: standardPage
+
+Social
+======
+
+* Join us on Slack: https://www.phpsouthwales.uk/slack
+* YouTube: https://www.phpsouthwales.uk/videos
+* Twitter: `@PhpSouthWales <https://twitter.com/phpsouthwales>`_
+
+Tonight
+=======
+
+* **Tapiwa Maumbe**
+
+  Introduction to PHP Security
+
+* **Ismael Velasco**
+
+  Securing your CIDR ranges: a blagger's guide and sample validation app
+
+Raffle
+======
+
+.. image:: images2/book.jpg
+   :height: 10cm
+
+Raffle
+======
+
+.. image:: images2/jetbrains.png
+   :height: 10cm
+
+Next month
+==========
+
+* **TBC**
+
+  Hacktoberfest?
+
+.. page:: titlePage
+
+.. class:: centredtitle
+
+Looking for speakers
+
+.. class:: titleslideinfo
+
+speak@phpsouthwales.uk