Add tags chapter

docs/topics/tags.rst

@@ -0,0 +1,36 @@
+====
+Tags
+====
+
+To configure and use: |Tags tab|
+
+To use: |Document icon| |Right arrow| |tags link|
+
+Tags allow giving documents a toggable property.  Documents can also be tagged
+with more than one tag.  Once tagged, documents can be search also by their tags
+and from the tags main menu a list of all the documents with a particular tag
+can be obtained easily.  Aside from their texts, tags can be assigned a particular
+color.
+
+.. figure:: /_static/screenshots/tags_screenshot.png
+   :alt: Tags links screenshot
+   :scale: 35%
+
+   Screenshot of showing how tags can also be used to represent the state of a 
+   document, in this case the review state of a permit.
+
+.. |Tags tab| image:: /_static/tags_tab.png
+ :alt: Tags tab
+ :align: middle
+
+.. |Right arrow| image:: /_static/arrow_right.png
+ :alt: Right arrow
+ :align: middle
+
+.. |Tags link| image:: /_static/tags_link.png
+ :alt: Tags link
+ :align: middle
+
+.. |Document icon| image:: /_static/page.png
+ :alt: Document icon
+ :align: middle