Updated links to handle:

http://issues.roundup-tracker.org/issue2550965

I think I have most of them at this point.

Author: rouilj

doc/customizing.txt

@@ -66,15 +66,18 @@ schema`_.  Some configuration is also performed using permissions - see the
 automatically register through the email interface, you must grant the
 "Anonymous" Role the "Email Access" Permission.
 
-The following is taken from the `Python Library Reference`__ (May 20, 2004)
+The following is taken from the `Python Library Reference`__ (July 18, 2018)
 section "ConfigParser -- Configuration file parser":
 
- The configuration file consists of sections, led by a "[section]" header
- and followed by "name = value" entries, with line continuations on a
- newline with leading whitespace. Note that leading whitespace is removed
- from values. The optional values can contain format strings which
- refer to other values in the same section. Lines beginning with "#" or ";"
- are ignored and may be used to provide comments. 
+ The configuration file consists of sections, led by a [section] header
+ and followed by name: value entries, with continuations in the style
+ of RFC 822 (see section 3.1.1, “LONG HEADER FIELDS”); name=value is
+ also accepted. Note that leading whitespace is removed from
+ values. The optional values can contain format strings which refer to
+ other values in the same section, or values in a special DEFAULT
+ section. Additional defaults can be provided on initialization and
+ retrieval. Lines beginning with '#' or ';' are ignored and may be
+ used to provide comments.
 
  For example::
 
@@ -85,7 +88,7 @@ section "ConfigParser -- Configuration file parser":
  would resolve the "%(dir)s" to the value of "dir" ("frob" in this case)
  resulting in "foodir" being "frob/whatever".
 
-__ http://docs.python.org/lib/module-ConfigParser.html
+__ https://docs.python.org/2/library/configparser.html
 
 Example configuration settings are below.
 
@@ -2694,7 +2697,7 @@ reverse     only on Multilink properties - produce a list of the linked
 isset       returns True if the property has been set to a value
 =========== ================================================================
 
-__ http://docs.python.org/lib/module-time.html
+__ https://docs.python.org/2/library/time.html
 
 All of the above functions perform checks for permissions required to
 display or edit the data they are manipulating. The simplest case is
@@ -4325,7 +4328,7 @@ Using an LDAP database for user information
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 A script that reads users from an LDAP store using
-http://python-ldap.sf.net/ and then compares the list to the users in the
+https://pypi.org/project/python-ldap/ and then compares the list to the users in the
 roundup user database would be pretty easy to write. You'd then have it run
 once an hour / day (or on demand if you can work that into your LDAP store
 workflow). See the example `Using a UN*X passwd file as the user database`_

doc/developers.txt

@@ -372,9 +372,8 @@ tools that may help you with this process:
 
  - `poEdit`_ by Vaclav Slavik.  Very nice cross-platform GUI editor.
 
- - `KBabel`_.  Being part of `KDE`_, it works in X windows only.
-    At the first glance looks pretty hairy, with all bells and whistles.
-    Haven't had much experience with it, though.
+ - `Lokalize`_. A replacement for KBabel. Being part of `KDE`_, it
+    works in X windows only. Haven't had much experience with it, though.
 
  - ``po-mode`` for `emacs`_.  One of `GNU gettext`_ tools.  Very handy,
    definitely recommended if you are comfortable with emacs.  Cannot
@@ -418,21 +417,21 @@ At run time, Roundup automatically compiles message catalogs whenever
 
 .. _alexander smishlajev:
 .. _als: http://sourceforge.net/users/a1s/
-.. _cygwin: http://www.cygwin.com/
-.. _emacs: http://www.gnu.org/software/emacs/
-.. _gettext package: http://www.gnu.org/software/gettext/
-.. _gettext module: http://docs.python.org/lib/module-gettext.html
+.. _cygwin: https://www.cygwin.com/
+.. _emacs: https://www.gnu.org/software/emacs/
+.. _gettext package: https://www.gnu.org/software/gettext/
+.. _gettext module: https://docs.python.org/2/library/gettext.html
 .. _GNU: http://www.gnu.org/
 .. _GNU mirror sites: http://www.gnu.org/prep/ftp.html
 .. _issue tracker: http://issues.roundup-tracker.org/
-.. _KBabel: http://i18n.kde.org/tools/kbabel/
+.. _Lokalize: Lokalize
 .. _KDE: http://www.kde.org/
-.. _linux: http://www.linux.org/
+.. _linux: https://www.linux.org/
 .. _Plural Forms:
     http://www.gnu.org/software/gettext/manual/html_node/gettext_150.html
 .. _po filetype plugin:
     http://vim.sourceforge.net/scripts/script.php?script_id=695
-.. _PO utilities: http://po-utils.progiciels-bpi.ca/
+.. _PO utilities: https://github.com/pinard/po-utils
 .. _poEdit: http://poedit.sourceforge.net/
 .. _Roundup Source:
 .. _Roundup source distribution:

doc/installation.txt

@@ -119,7 +119,7 @@ Windows Service
 .. _Xapian: http://xapian.org/
 .. _Whoosh: https://bitbucket.org/mchaput/whoosh/wiki/Home
 .. _pytz: https://pypi.org/project/pytz/
-.. _Olson tz database: http://www.twinsun.com/tz/tz-link.htm
+.. _Olson tz database: https://www.iana.org/time-zones
 .. _pyopenssl: http://pyopenssl.sourceforge.net
 .. _pyme: http://pyme.sourceforge.net
 .. _pywin32: https://pypi.org/project/pywin32/