Add support for configuring database with port instead of socket

Signed-off-by: Leonidas Spyropoulos <artafinde@gmail.com>

conf/config.defaults

@@ -2,6 +2,7 @@
 backend = mysql
 host = localhost
 socket = /var/run/mysqld/mysqld.sock
+;port = 3306
 name = AUR
 user = aur
 password = aur

conf/config.dev

@@ -9,11 +9,14 @@
 backend = sqlite
 name = YOUR_AUR_ROOT/aurweb.sqlite3
 
-; Alternative MySQL configuration
+; Alternative MySQL configuration (Use either port of socket, if both defined port takes priority)
 ;backend = mysql
 ;name = aurweb
 ;user = aur
 ;password = aur
+;host = localhost
+;port = 3306
+;socket = /var/run/mysqld/mysqld.sock
 
 [options]
 aurwebdir = YOUR_AUR_ROOT