move For ... Impatient section up, add directions, style footnote

Move the For the Really Impatient closer to the top. Where it was
would never be read by the impatient.  Add step by step directions for
download/unpack and start.

Format footnotes with smaller text.

Author: rouilj

doc/_static/style.css

@@ -114,3 +114,7 @@ a.headerlink {
   margin-left: 0.3em;
   color: #c99;
 }
+
+table.footnote {
+  font-size: calc(1em - 1pt);
+}

doc/installation.txt

@@ -36,6 +36,46 @@ Roundup scripts
  These include the email gateway, the roundup
  HTTP server, the roundup administration command-line interface, etc.
 
+For The Really Impatient
+========================
+
+If you just want to give Roundup a whirl Right Now, follow these
+directions to download, unpack and run ``demo.py``. (Replace
+``-2.2.0`` with the version number of the file you downloaded. On
+systems that don't provide a ``python3`` program you can run
+``python demo.py``.)
+
+1. ``python3 -m pip download roundup``
+2. ``tar -xzvf roundup-2.2.0.tar.gz``
+
+   * if you don't have a tar command, ``python3 -c 'import tarfile, sys; tarfile.open(sys.argv[1]).extractall();' roundup-2.2.0.tar.gz`` can be used.
+
+3. ``cd roundup-2.2.0``
+4. ``python3 demo.py``
+
+This will set up a simple demo tracker on your machine. [1]_
+When it's done, it'll print out a URL to point your web browser at
+so you may start playing. Three users will be set up:
+
+1. anonymous - the "default" user with permission to do very little
+2. demo (password "demo") - a normal user who may create issues
+3. admin (password "admin") - an administrative user who has complete
+   access to the tracker
+
+Note the demo tracker removes the detector (nosyreaction.py) that
+sends email notifications. If you later convert your demo tracker to
+production you will need to copy in the detector to send notification
+emails.
+
+If you install Roundup, the ``demo.py`` script is available as
+``roundup-demo``.
+
+.. [1] Demo tracker is set up to be accessed by localhost browser.
+       If you run demo on a server host, please stop the demo (using
+       Control-C) after it has shown the startup notice, open file
+       ``demo/config.ini`` with your editor, change host name in
+       the ``web`` option in section ``[tracker]``, save the file,
+       then re-run the demo.py program.
 
 Prerequisites
 =============
@@ -168,29 +208,6 @@ Getting Roundup
 
 Download the latest version from https://www.roundup-tracker.org/.
 
-For The Really Impatient
-========================
-
-If you just want to give Roundup a whirl Right Now, then simply unpack
-and run ``demo.py`` (it will be available as ``roundup-demo`` script
-after installation). (On systems that don't provide a ``python3``
-program you might need to run ``python demo.py``.)
-
-This will set up a simple demo tracker on your machine. [1]_
-When it's done, it'll print out a URL to point your web browser at
-so you may start playing. Three users will be set up:
-
-1. anonymous - the "default" user with permission to do very little
-2. demo (password "demo") - a normal user who may create issues
-3. admin (password "admin") - an administrative user who has complete
-   access to the tracker
-
-.. [1] Demo tracker is set up to be accessed by localhost browser.
-       If you run demo on a server host, please stop the demo when
-       it has shown startup notice, open file ``demo/config.ini`` with
-       your editor, change host name in the ``web`` option in section
-       ``[tracker]``, save the file, then re-run the demo.py program.
-
 Installation
 ============
 

website/www/_static/style.css

@@ -184,3 +184,7 @@ div.highlight pre { background: lightyellow;}
 /* remove solid black border when focus is around the main section
    due to activation of skip-link. Page jumps there, that's enough. */
 #main:focus-visible {outline: none;}
+
+table.footnote {
+  font-size: calc(1em - 1pt);
+}