Merge pull request #294 from virtualtam/doc/update

Doc: sync from Wiki, generate HTML

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+#Shaarli configuration
+## Foreword
+
+**Do not edit configuration options in index.php! Your changes would be lost.** 
+
+Once your Shaarli instance is installed, the file `data/config.php` is generated:
+* it contains all settings, and can be edited to customize values
+* its values override those defined in `index.php`
+
+## File and directory permissions
+The server process running Shaarli must have:
+- `read` access to the following resources:
+    - PHP scripts: `index.php`, `application/*.php`
+    - 3rd party PHP and Javascript libraries: `inc/*.php`, `inc\*.js`
+    - static assets:
+        - CSS stylesheets: `inc\*.css`
+        - `images\*`
+    - RainTPL templates: `tpl\*.html`
+- `read`, `write` and `execution` access to the following directories:
+    - `cache` - thumbnail cache
+    - `data` - link data store, configuration options
+    - `pagecache` - Atom/RSS feed cache
+    - `tmp` - RainTPL page cache
+
+On a Linux distribution:
+- the web server user will likely be `www` or `http` (for Apache2)
+- it will be a member of a group of the same name: `www:www`, `http:http`
+- to give it access to Shaarli, either:
+    - unzip Shaarli in the default web server location (usually `/var/www/`) and set the web server user as the owner
+    - put users in the same group as the web server, and set the appropriate access rights
+- if you have a domain / subdomain to serve Shaarli, [configure the server](Server-configuration) accordingly[](.html)
+
+## Example `data/config.php`
+```php
+<?php 
+// User login
+$GLOBALS['login'] = '<login>';[](.html)
+
+// User password hash
+$GLOBALS['hash'] = '200c452da46c2f889e5e48c49ef044bcacdcb095';[](.html)
+
+// Password salt
+$GLOBALS['salt'] = '13b654102321576033d8473b63a275a1bf94c0f0'; [](.html)
+
+// Local timezone
+$GLOBALS['timezone'] = 'Africa/Abidjan';[](.html)
+date_default_timezone_set('Africa/Abidjan');
+
+// Shaarli title
+$GLOBALS['title'] = 'My Little Shaarly';[](.html)
+
+// Link the Shaarli title points to
+$GLOBALS['titleLink'] = '?';[](.html)
+
+// HTTP referer redirector
+$GLOBALS['redirector'] = '';[](.html)
+
+// Disable session hijacking
+$GLOBALS['disablesessionprotection'] = false; [](.html)
+
+// Whether new links are private by default
+$GLOBALS['privateLinkByDefault'] = false;[](.html)
+
+// Subdirectory where Shaarli stores its data files.
+// You can change it for better security.
+$GLOBALS['config'['DATADIR'] = 'data';]('DATADIR']-=-'data';.html)
+
+// File used to store settings
+$GLOBALS['config'['CONFIG_FILE'] = 'data/config.php';]('CONFIG_FILE']-=-'data/config.php';.html)
+
+// File containing the link database
+$GLOBALS['config'['DATASTORE'] = 'data/datastore.php';]('DATASTORE']-=-'data/datastore.php';.html)
+
+// Number of links displayed per page
+$GLOBALS['config'['LINKS_PER_PAGE'] = 20;]('LINKS_PER_PAGE']-=-20;.html)
+
+// File recording failed login attempts and IP bans
+$GLOBALS['config'['IPBANS_FILENAME'] = 'data/ipbans.php';]('IPBANS_FILENAME']-=-'data/ipbans.php';.html)
+
+// Failed login attempts before being banned
+$GLOBALS['config'['BAN_AFTER'] = 4;]('BAN_AFTER']-=-4;.html)
+
+// Duration of an IP ban, in seconds (30 minutes)
+$GLOBALS['config'['BAN_DURATION'] = 1800;]('BAN_DURATION']-=-1800;.html)
+
+// If set to true, everyone will be able to add, edit and remove links,
+// as well as change configuration
+$GLOBALS['config'['OPEN_SHAARLI'] = false;]('OPEN_SHAARLI']-=-false;.html)
+
+// Do not show link timestamps
+$GLOBALS['config'['HIDE_TIMESTAMPS'] = false;]('HIDE_TIMESTAMPS']-=-false;.html)
+
+// Set to false to disable local thumbnail cache, e.g. due to limited disk quotas
+$GLOBALS['config'['ENABLE_THUMBNAILS'] = true;]('ENABLE_THUMBNAILS']-=-true;.html)
+
+// Thumbnail cache directory
+$GLOBALS['config'['CACHEDIR'] = 'cache';]('CACHEDIR']-=-'cache';.html)
+
+// Enable feed (rss, atom, dailyrss) cache
+$GLOBALS['config'['ENABLE_LOCALCACHE'] = true;]('ENABLE_LOCALCACHE']-=-true;.html)
+
+// Feed cache directory
+$GLOBALS['config'['PAGECACHE'] = 'pagecache';]('PAGECACHE']-=-'pagecache';.html)
+
+// RainTPL cache directory (keep the trailing slash!)
+$GLOBALS['config'['RAINTPL_TMP'] = 'tmp/';]('RAINTPL_TMP']-=-'tmp/';.html)
+
+// RainTPL template directory (keep the trailing slash!)
+$GLOBALS['config'['RAINTPL_TPL'] = 'tpl/';]('RAINTPL_TPL']-=-'tpl/';.html)
+
+// Whether Shaarli checks for new releases at https://github.com/shaarli/Shaarli
+$GLOBALS['config'['ENABLE_UPDATECHECK'] = true;]('ENABLE_UPDATECHECK']-=-true;.html)
+
+// File to store the latest Shaarli version
+$GLOBALS['config'['UPDATECHECK_FILENAME'] = 'data/lastupdatecheck.txt';]('UPDATECHECK_FILENAME']-=-'data/lastupdatecheck.txt';.html)
+
+// Delay between version checks (requires to be logged in) (24 hours)
+$GLOBALS['config'['UPDATECHECK_INTERVAL'] = 86400;]('UPDATECHECK_INTERVAL']-=-86400;.html)
+
+// For each link, display a link to an archived version on archive.org
+$GLOBALS['config'['ARCHIVE_ORG'] = false;]('ARCHIVE_ORG']-=-false;.html)
+
+// The RSS item links point:
+// true   =>  directly to the link
+// false  =>  to the entry on Shaarli (permalink)
+$GLOBALS['config'['ENABLE_RSS_PERMALINKS'] = true;]('ENABLE_RSS_PERMALINKS']-=-true;.html)
+
+// Hide all links to non-logged users
+$GLOBALS['config'['HIDE_PUBLIC_LINKS'] = false;]('HIDE_PUBLIC_LINKS']-=-false;.html)
+
+$GLOBALS['config'['PUBSUBHUB_URL'] = '';]('PUBSUBHUB_URL']-=-'';.html)
+
+// Show an ATOM Feed button next to the Subscribe (RSS) button.
+// ATOM feeds are available at the address ?do=atom regardless of this option.
+$GLOBALS['config'['SHOW_ATOM'] = false;]('SHOW_ATOM']-=-false;.html)
+?>
+```