7 files changed, 18 insertions, 6 deletions

diff --git a/README.md b/README.md
index d67c10ac..d8328d83 100644
--- a/README.md
+++ b/README.md
@@ -26,6 +26,7 @@ Login: `demo`; Password: `demo`
 
 ### Installation & upgrade
 - [Download](https://github.com/shaarli/Shaarli/wiki/Download)
+- [Upgrade and migration](https://github.com/shaarli/Shaarli/wiki/Upgrade-and-migration)
 - [Server requirements](https://github.com/shaarli/Shaarli/wiki/Server-requirements)
 - [Server configuration](https://github.com/shaarli/Shaarli/wiki/Server-configuration)
 - [Shaarli configuration](https://github.com/shaarli/Shaarli/wiki/Shaarli-configuration)
diff --git a/application/LinkDB.php b/application/LinkDB.php
index 1cb70de0..b1072e07 100644
--- a/application/LinkDB.php
+++ b/application/LinkDB.php
@@ -440,11 +440,18 @@ You use the community supported version of the original Shaarli project, by Seba
     public function allTags()
     {
         $tags = array();
+        $caseMapping = array();
         foreach ($this->_links as $link) {
             foreach (explode(' ', $link['tags']) as $tag) {
-                if (!empty($tag)) {
-                    $tags[$tag] = (empty($tags[$tag]) ? 1 : $tags[$tag] + 1);
+                if (empty($tag)) {
+                    continue;
                 }
+                // The first case found will be displayed.
+                if (!isset($caseMapping[strtolower($tag)])) {
+                    $caseMapping[strtolower($tag)] = $tag;
+                    $tags[$caseMapping[strtolower($tag)]] = 0;
+                }
+                $tags[$caseMapping[strtolower($tag)]]++;
             }
         }
         // Sort tags by usage (most used tag first)
diff --git a/application/Url.php b/application/Url.php
index 77447c8d..c166ff6e 100644
--- a/application/Url.php
+++ b/application/Url.php
@@ -99,6 +99,7 @@ class Url
         'action_type_map=',
         'fb_',
         'fb=',
+        'PHPSESSID=',
 
         // Scoop.it
         '__scoop',
diff --git a/tests/FeedBuilderTest.php b/tests/FeedBuilderTest.php
index 069b1581..647b2db2 100644
--- a/tests/FeedBuilderTest.php
+++ b/tests/FeedBuilderTest.php
@@ -93,7 +93,7 @@ class FeedBuilderTest extends PHPUnit_Framework_TestCase
         $this->assertContains('Permalink', $link['description']);
         $this->assertContains('http://host.tld/?WDWyig', $link['description']);
         $this->assertEquals(1, count($link['taglist']));
-        $this->assertEquals('stuff', $link['taglist'][0]);
+        $this->assertEquals('sTuff', $link['taglist'][0]);
 
         // Test URL with external link.
         $this->assertEquals('https://static.fsf.org/nosvn/faif-2.0.pdf', $data['links']['20150310_114633']['url']);
diff --git a/tests/LinkDBTest.php b/tests/LinkDBTest.php
index b055fe91..30ea4e01 100644
--- a/tests/LinkDBTest.php
+++ b/tests/LinkDBTest.php
@@ -290,7 +290,9 @@ class LinkDBTest extends PHPUnit_Framework_TestCase
                 'stallman' => 1,
                 'free' => 1,
                 '-exclude' => 1,
-                'stuff' => 2,
+                // The DB contains a link with `sTuff` and another one with `stuff` tag.
+                // They need to be grouped with the first case found (`sTuff`).
+                'sTuff' => 2,
             ),
             self::$publicLinkDB->allTags()
         );
@@ -310,7 +312,7 @@ class LinkDBTest extends PHPUnit_Framework_TestCase
                 'w3c' => 1,
                 'css' => 1,
                 'Mercurial' => 1,
-                'stuff' => 2,
+                'sTuff' => 2,
                 '-exclude' => 1,
                 '.hidden' => 1,
             ),
diff --git a/tests/Url/UrlTest.php b/tests/Url/UrlTest.php
index ce82265e..4bf53b2d 100644
--- a/tests/Url/UrlTest.php
+++ b/tests/Url/UrlTest.php
@@ -85,6 +85,7 @@ class UrlTest extends PHPUnit_Framework_TestCase
         $this->assertUrlIsCleaned('?utm_term=1n4l');
 
         $this->assertUrlIsCleaned('?xtor=some-url');
+        $this->assertUrlIsCleaned('?PHPSESSID=012345678910111213');
     }
 
     /**
diff --git a/tests/utils/ReferenceLinkDB.php b/tests/utils/ReferenceLinkDB.php
index dc4f5dfa..46165b4d 100644
--- a/tests/utils/ReferenceLinkDB.php
+++ b/tests/utils/ReferenceLinkDB.php
@@ -21,7 +21,7 @@ class ReferenceLinkDB
             'Stallman has a beard and is part of the Free Software Foundation (or not). Seriously, read this.',
             0,
             '20150310_114651',
-            'stuff'
+            'sTuff'
         );
 
         $this->addLink(