Shaarli – Directory structure

Directory structure
Here is the directory structure of Shaarli and the purpose of the different files:
    index.php        # Main program
-    application/     # Shaarli classes
-        ├── LinkDB.php
-        └── Utils.php
-    tests/       # Shaarli unitary & functional tests
-        ├── LinkDBTest.php
-        ├── utils  # utilities to ease testing
-        │   └── ReferenceLinkDB.php
-        └── UtilsTest.php
-    COPYING          # Shaarli license
-    inc/             # static assets and 3rd party libraries
-        ├── awesomplete.*          # tags autocompletion library
-        ├── blazy.*                # picture wall lazy image loading library
-        ├── shaarli.css, reset.css # Shaarli stylesheet.
-        ├── qr.*                   # qr code generation library
-        └──rain.tpl.class.php      # RainTPL templating library
-    tpl/             # RainTPL templates for Shaarli. They are used to build the pages.
-    images/          # Images and icons used in Shaarli
-    data/            # data storage: bookmark database, configuration, logs, banlist…
-        ├── config.php             # Shaarli configuration (login, password, timezone, title…)
-        ├── datastore.php          # Your link database (compressed).
-        ├── ipban.php              # IP address ban system data
-        ├── lastupdatecheck.txt    # Update check timestamp file
-        └──log.txt                 # login/IPban log.
-    cache/           # thumbnails cache
-                     # This directory is automatically created. You can erase it anytime you want.
-    tmp/             # Temporary directory for compiled RainTPL templates.
-                     # This directory is automatically created. You can erase it anytime you want.