Url: introduce global helper functions for cleanup and scheme detection

Relates to #314 & #326

Additions:
 - add global `cleanup_url()` and `get_url_scheme()` functions

Modifications:
 - replace `Url` usage in `index.php` by calls to global functions
 - fix `Url` tests not being run: PHPUnit expects a single test class per file
   - move classes to separate files

1 files changed, 4 insertions, 0 deletions

diff --git a/application/LinkDB.php b/application/LinkDB.php
index 463aa47e..84733505 100644
--- a/application/LinkDB.php
+++ b/application/LinkDB.php
@@ -287,6 +287,10 @@ You use the community supported version of the original Shaarli project, by Seba
 
     /**
      * Returns the link for a given URL, or False if it does not exist.
+     *
+     * @param string $url URL to search for
+     *
+     * @return mixed the existing link if it exists, else 'false'
      */
     public function getLinkFromUrl($url)
     {