Extract animalname validation + add tests for it

Require FQDN as subdomain

This addresses issue #11

Add more phpDoc

Make ajax requests to test the server setup

Known issues: The request after the first-time-setup causes the user to be
logged out of the master wiki. The ajax request after creating the animals
do n

Make ajax requests to test the server setup

Known issues: The request after the first-time-setup causes the user to be
logged out of the master wiki. The ajax request after creating the animals
do not have this issue.

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Print error messages only at the top and only once

This relies on the changes in splitbrain/dokuwiki#1340

The farmer plugin should always be disabled in an animal

see issue #5

Check for necessary farm constants instead of preload.php

This commit closes #7

Add conf option for plugins disabled by default

Use dokuwiki zip library

Farmdir must not be in dokuwiki and be saved as an absolute path

closes #2, closes #4

Download animal template into DOKU_FARMDIR

Move FormErrorfunction to helper function

Move reloading a adminpage to its own function

Add helper functions to (de-)activate plugins

Do sorting in getAllPlugins and exclude testing plugin

Activate/Deactivate plugins in bulk

intial commit