Greek support, modular weather, command history for console window

Former-commit-id: b72d0b018c084e80cf4fef77e1b1a81101d6daea
Former-commit-id: 32da6a2998826de6519a901dcff7bf058f689b2f

src/net/torvald/terrarum/console/ConsoleCommand.kt

@@ -5,6 +5,12 @@ package net.torvald.terrarum.console
  */
 interface ConsoleCommand {
 
+    /**
+     * Args 0: command given
+     * Args 1: first argument
+     *
+     * e.g. in ```setav mass 74```, zeroth args will be ```setav```.
+     */
     @Throws(Exception::class)
     fun execute(args: Array<String>)