Restructure documentation

Signed-off-by: Roberto Rosario <roberto.rosario@mayan-edms.com>

docs/releases/3.0.3.txt

@@ -0,0 +1,84 @@
+Versin 3.0.3
+============
+
+Released: August 17, 2018
+
+Changes
+-------
+
+Program code
+^^^^^^^^^^^^
+
+- Tags app: Add explicit post action redirect for the tag attach and
+  tag remove actions when working on a single document.
+
+
+Security
+^^^^^^^^
+
+- Tags app: Add explicit casting of escaped tag labels to prevent exploit
+  of cross site scripting. Thanks to Lokesh (@lokesh1095) for
+  the report and proposed solutions. Closes GitLab issue #496.
+
+
+Removals
+--------
+
+- None
+
+
+Upgrading from a previous version
+---------------------------------
+
+Using PIP
+^^^^^^^^^
+
+Type in the console::
+
+    $ pip install mayan-edms==3.0.3
+
+the requirements will also be updated automatically.
+
+
+Using Git
+^^^^^^^^^
+
+If you installed Mayan EDMS by cloning the Git repository issue the commands::
+
+    $ git reset --hard HEAD
+    $ git pull
+
+otherwise download the compressed archived and uncompress it overriding the
+existing installation.
+
+Next upgrade/add the new requirements::
+
+    $ pip install --upgrade -r requirements.txt
+
+
+Common steps
+^^^^^^^^^^^^
+
+Migrate existing database schema with::
+
+    $ mayan-edms.py performupgrade
+
+Add new static media::
+
+    $ mayan-edms.py collectstatic --noinput
+
+The upgrade procedure is now complete.
+
+
+Backward incompatible changes
+-----------------------------
+
+* None
+
+
+Bugs fixed or issues closed
+---------------------------
+
+* :gitlab-issue:`496` Persistent Cross Site Scripting
+
+.. _PyPI: https://pypi.python.org/pypi/mayan-edms/