/*

Menu consist of several menu items.  One menu item has two or three
elements:
- id
- page title
- optional submenu

The id identifies the page and is also a filename for the page.

Simple menu:

    menu = [
        ['item01', 'Item title 01'],
        ['item02', 'Item title 02']
    ]

The menu above contains two top level menu items.  There are two pages:
item01.html and item02.html with titles 'Item title 01' and 'Item title 02'
and it could be rendered this way:

    Item title 01
    Item title 02

To add next menu item just enhance above definition:

    menu = [
        ['item01', 'Item title 01'],
        ['item02', 'Item title 02'],
        ['item03', 'Item title 03']
    ]

Above can be rendered on the web page:

    Item title 01
    Item title 02
    Item title 03

Submenu looks like a menu, just add it as third parameter to appropriate
menu item (item02 in this case):

    menu = [
        ['item01', 'Item title 01'],
        ['item02', 'Item title 02', [
            ['s01', 'S01 title'],
            ['s02', 'S02 title'],
            ['s03', 'S03 title']
        ]],                           // <-- note two right brackets to close submenu and menu item
        ['item03', 'Item title 03']
    ]

It can be rendered this way:

    Item title 01
    Item title 02
       |-> S01 title
       |-> S02 title
       +-> S03 title
    Item title 03

As said above, if menu item has id item01, then there should be file
item01.html. But if item has submenu then there should be direcotry item01
instead. The directory should contain files for submenu of given menu item.

For example, in case of last example above, there should be following
directory and file layout:

    item01.html
    item03.html

    item02/s01.html
    item02/s02.html
    item02/s03.html

*/
menu = [
    ['willkommen', 'Willkommen'],
    ['aktuelles', 'Aktuelles'],
    ['einfuehrung', 'Einführung', [
        ['blumedeslebens-1', 'Blume des Lebens'],
        ['merkaba-1', 'MerKaBa'],
        ['schamanentum', 'Schamanentum']
    ]],
    ['seminare', 'Seminare', [
        ['merkaba1', 'MerKaBa I - Blume des Lebens'],
        ['merkaba2', 'MerKaBa II - Der Weltenbaum'],
        ['merkaba3', 'MerKaBa III - In Verbindung sein'],
        ['reisezurseele', 'Reise zur Seele'],
        ['kreisdeslebens', 'Kreis des Lebens'],
        ['kraftdervision', 'Kraft der Vision'],
        ['mitte', 'Aus der Mitte leben'],
        ['meditation', 'Ein Tag mit Osho`s Meditationen'],
        ['zenyoga', 'Zen Yoga - Heilung und Regeneration'],
    ]],
    ['einzelarbeit', 'Einzelarbeit', [
        ['counselling', 'Counselling'],
        ['emfbalancing', 'EMF Balancing'],
    ]],
    ['reisen', 'Reisen', [
        ['cominghome', 'Coming Home - Wüstenretreat'],
        ['mayaland', 'Yucatan - Im Land der Maya'],
    ]],
    ['termine', 'Termine', [
        ['uebersicht', 'Übersicht aller Termine'],
        ['merkaba1', 'MerKaBa I - Blume des Lebens'],
        ['merkaba2', 'MerKaBa II - Der Weltenbaum'],
        ['merkaba3', 'MerKaBa III - In Verbindung sein'],
        ['reisezurseele', 'Reise zur Seele'],
        ['kreisdeslebens', 'Kreis des Lebens'],
        ['kraftdervision', 'Kraft der Vision'],
        ['mitte', 'Aus der Mitte leben'],
        ['meditation', 'Ein Tag mit Osho`s Meditationen'],
        ['vortraege', 'Vorträge'],
        ['mediabend', 'MerKaBa-Meditationsabende'],
        ['zenyoga', 'Zen Yoga - Heilung und Regeneration'],
    ]],
    ['ueberuns', 'Über uns', [
        ['rainer', 'Rainer Kitza'],
        ['monika', 'Monika Henning'],
        ['claudia', 'Claudia Werner'],
        ['lyssa', 'Lyssa Royal-Holt'],
        ['ron', 'Ron Holt']
    ]],
    ['shop', 'Shop'],
    ['lesenswertes', 'Lesenswertes'],
    ['links', 'Links'],
    ['impressum', 'Impressum'],
    ['index', 'Home']
];