* caused player.vocation to be resetted when saving player, for example:
on change name, accept invite to guild, leave guild
* fixed empty success message on leave guild
* (internal) using $player->getVocationName() where possible instead of
older method
* fixed some warning in guild show
* fixed changing comment of characters with space and other special
characters in name (#29)
* fixed viewing guilds with space and other special characters in name
(#29)
* (kathrine template) fixed displaying menu when no URI is set (URI =
'/')
* added some additional checks for Validator guildName and rankName if
name is empty
* (internal) new twig filter: urlencode, which is using urlencode php
function
