Fix 2013-12-08 "Binky" compatibilty issue (un-saveable config)

All onoff configuration switches do not get saved when the user changes
the value. The reason was that I used true|false for "onoff" switches
although only 1|0 was allowed [1] (never noticed this).

It worked for years but the way the configuration gets parsed by DokuWiki
was changed [2] [3] after Binky RC2, so the bug affects the current
DokuWiki Binky final only.

[1] <https://www.dokuwiki.org/config#configuration_options>
[2] <splitbrain/dokuwiki@43e7001>
[3] <http://www.freelists.org/post/dokuwiki/SemiUrgent-broken-template-config-in-final-Binky,1>

conf/default.php

@@ -31,27 +31,27 @@
}

//header navigation
$conf["mnmlblog_headernav"]          = false; //TRUE: use/show header navigation
$conf["mnmlblog_headernav"]          = 0; //1: use/show header navigation
$conf["mnmlblog_headernav_location"] = ":wiki:navigation_header"; //page/article used to store the header navigation

//sidebar navigation
$conf["mnmlblog_sidebarnav"]          = true; //TRUE: use/show sidebar navigation
$conf["mnmlblog_sidebarnav"]          = 1; //1: use/show sidebar navigation
$conf["mnmlblog_sidebarnav_location"] = ":wiki:navigation_sidebar"; //page/article used to store the sidebar navigation

//custom copyright notice
$conf["mnmlblog_copyright"]          = true; //TRUE: use/show copyright notice
$conf["mnmlblog_copyright_default"]  = true; //TRUE: use default copyright notice (if copyright notice is enabled at all)
$conf["mnmlblog_copyright"]          = 1; //1: use/show copyright notice
$conf["mnmlblog_copyright_default"]  = 1; //1: use default copyright notice (if copyright notice is enabled at all)
$conf["mnmlblog_copyright_location"] = ":wiki:copyright"; //page/article used to store a custom copyright notice

//search form
$conf["mnmlblog_search"]     = true; //TRUE: use/show search
$conf["mnmlblog_search"]     = 1; //1: use/show search
$conf["mnmlblog_search_pos"] = "sidebar"; //sidebar or headernav

//qr code box
$conf["mnmlblog_qrcodebox"] = true; //TRUE: use/show box with QR Code of current page's URL
$conf["mnmlblog_qrcodebox"] = 1; //1: use/show box with QR Code of current page's URL

//other stuff
$conf["mnmlblog_newpostform_location"]   = ":wiki:create_new_blogpost"; //page/article used to store the form to create a new blog post
$conf["mnmlblog_hideadminlinksfromanon"] = false; //TRUE: hide admin links if client is not an authenticated user (including login link -> you have to call "example.com?do=login" manually)
$conf["mnmlblog_loaduserjs"]             = false; //TRUE: mnml-blog/user/user.js will be loaded
$conf["mnmlblog_hideadminlinksfromanon"] = 0; //1: hide admin links if client is not an authenticated user (including login link -> you have to call "example.com?do=login" manually)
$conf["mnmlblog_loaduserjs"]             = 0; //1: mnml-blog/user/user.js will be loaded