markdownify remaining docs (#9955)

* markdownify remaining docs
[skip ci]

* add docs folder
[skip ci]

* update paths in makefile
[skip ci]

* futureproof docs cleanup

* revert makefile changes

Author: johndoh

LICENSE

@@ -69,7 +69,7 @@ roundcubemail-git: buildtools
 	(cd roundcubemail-git; find . -name '.gitignore' | xargs rm -f)
 	(cd roundcubemail-git; find . -name '.travis.yml' | xargs rm -f)
 	(cd roundcubemail-git; rm -rf tests plugins/*/tests .git* .tx* .ci* .editorconfig* index-test.php Dockerfile Makefile package.json package-lock.json node_modules)
-	(cd roundcubemail-git; rm -f .eslintrc.js .php-cs-fixer.dist.php  phpstan.neon.dist CODE_OF_CONDUCT.md SOCIAL_WORK_GUIDELINES.md)
+	(cd roundcubemail-git; rm -f .eslintrc.js .php-cs-fixer.dist.php phpstan.neon.dist)
 	(cd roundcubemail-git; $(SEDI) 's/1.7-git/$(VERSION)/' program/include/iniset.php program/lib/Roundcube/bootstrap.php)
 	(cd roundcubemail-git; $(SEDI) 's/# Unreleased/# Release $(VERSION)'/ CHANGELOG.md)
 

Makefile

@@ -18,7 +18,7 @@ Roundcube Webmail is a browser-based multilingual IMAP client with an
 application-like user interface. It provides full functionality you expect
 from an email client, including MIME support, address book, folder management,
 message searching and spell checking. Roundcube Webmail is written in PHP and
-requires the MariaDB, MySQL, PostgreSQL or SQLite database. With its plugin API it 
+requires the MariaDB, MySQL, PostgreSQL or SQLite database. With its plugin API it
 is easily extendable and the user interface is fully customizable using skins.
 
 The code designed to run on a webserver is mainly written in PHP and Javascript.
@@ -29,17 +29,17 @@ and requires a set of external libraries (see composer.json and jsdeps.json file
 RELEASES
 --------
 
-Roundcubemail follows the semantic versioning rules for releases. For more details please read [the RELEASE_MANAGEMENT
-file](RELEASE_MANAGEMENT.md).
+Roundcubemail follows the semantic versioning rules for releases. For more details please read
+[the RELEASE_MANAGEMENT file](docs/RELEASE_MANAGEMENT.md).
 
 
 INSTALLATION
 ------------
 For detailed instructions on how to install Roundcube webmail on your server,
-please refer to the INSTALL document in the same directory as this document.
+please refer to the [INSTALL.md](docs/INSTALL.md) document in the same directory as this document.
 
 If you're updating an older version of Roundcube please follow the steps
-described in the UPGRADING file.
+described in the [UPGRADING.md](docs/UPGRADING.md) file.
 
 
 BROWSER SUPPORT

README.md

@@ -58,7 +58,7 @@ if (strtolower($input) == 'y') {
     echo 'Copying files to target location...';
 
     $adds = [];
-    $dirs = ['bin', 'SQL', 'plugins', 'skins', 'program'];
+    $dirs = ['bin', 'SQL', 'plugins', 'skins', 'program', 'docs'];
 
     if (is_dir(INSTALL_PATH . 'vendor') && (!is_file("{$target_dir}/composer.json") || rcmail_install::vendor_dir_untouched($target_dir))) {
         $dirs[] = 'vendor';
@@ -83,9 +83,6 @@ if (strtolower($input) == 'y') {
         'index.php',
         'CHANGELOG.md',
         'README.md',
-        'UPGRADING',
-        'LICENSE',
-        'INSTALL',
         'public_html/index.php',
         'public_html/installer.php',
         'public_html/static.php',