Add collecting no-prio issues. Restructure. * Move usage examples from collect_issues.py to examples/. Also add a section about this to the readme. This should make it easier to understand how it all works together. As we have two examples now, hardcode the database filenames. * Add a function to create the necessary database command from a list of columns. This makes it easier to work with tracker that have customized their priorities, * Add an example how to collect no-prio issues in a database. Note that the display part is not included. * Cleanup roundup_content_data by removing db file name suggestions and unused "reference db" command. This could be re-added for specific installations if they need it, however it probably should be separated as configuration.

--- a/display_issues_demo.py	Mon Jul 09 11:44:52 2018 +0200
+++ b/display_issues_demo.py	Mon Jul 09 12:28:28 2018 +0200
@@ -6,7 +6,7 @@
 author: Bernhard Reiter <bernhard@intevation.de>
 author: Sean Engelhardt <sean.engelhardt@intevation.de>
 
-(c) 2010,2015 by Intevation GmbH
+(c) 2010, 2015, 2018 by Intevation GmbH
 
 This is Free Software unter the terms of the
 GNU GENERAL PUBLIC LICENSE Version 3 or later.
@@ -16,6 +16,6 @@
 from display_issues import *
 
 cgitb.enable() # (optional) HTML traceback to browser
-#render_db_stats_as_html(rcd.DATABASE_DEMO, rcd.SELECT_ALL)
-render_db_stats_as_html(rcd.DATABASE_DEMO,
+#render_db_stats_as_html("./demo1.db", rcd.SELECT_ALL)
+render_db_stats_as_html("./demo1.db",
         rcd.SELECT_WHERE.format("timestamp > date('now', '-2 month')"))