form parser

Put in data/plugins/parser
Tested in moin 1.5

Todo:
 * default values
   * Would like the ability to use cfg.xyz, user.xyz, get.xyz or post.xyz to
     pull default values in from moin config, user preferences, get/url vars
     and post vars from a previous submission (to link multiple forms)
 * more advanced validation
 * additional widgets
   * time/date/date-time chooser
   * chained selections (i.e. two lists allowing moving options from one to 
     the other)
 * input sanity checking
   * right now, you could enter an option such as 
     abc=xyz=pdq and get unpredictable results
   * I'm not sure what happens if you start the row off with invalid data
 * Allow wiki content, or at least wiki links in the labels (maybe)
 
Hey, cool feature - use the form builder to create your forms.

Form is defined by rows. The first row must be the "form" row.
The columns are
 1. form element type
 2. options for the form element, separated by ; and options are key=value 
    formatted. Extra = will likely cause a problem.
 3. name of the form field
 4. label text
 5. default value
 6. options for radio/check/select lists, again separated by ; and in the 
    form of key or key=value (in the case of key only, then it will be 
    converted to key=value)
 7. extra explanitory text shown in a (evenutally) smaller font below the 
    form field

Here's an example form:
{{{#!form
form|id=TheRealForm;method=get;cancel=f;submit_text=Submit|form1|http://www.google.com
section|||Personal Information
text|required=t|firstname|Please enter your first name
text|width=100%;required=f|lastname|Please provide your lastname|||Please tell us your lastname
email|width=100%;required=t|email|Please enter your e-mail address
password|width=15;required=t|password|Please provide a password
password|width=15;mustmatch=password|password2|Repeat password||Please type your password again||You are asked to enter your password twice so that you can be sure you've not made a simple typing error that would prevent you from accessing your preferences
section|||Preferences
url|width=100%|homepage|What is the link to your homepage?
select|allowmulti=t|fav_colors|What are your favorite colors?||red=Red;blue=Blue;green=Gren;all=All of the colors
select||fav_linux|What is your favorite Linux distro?||Ubuntu;Redhat;Novell;Debian;Other=None of the above
checkbox||languages|What are your favorite programming languages?||python;C=C/C++/C#;Ruby;PHP;Perl;Basic=Basic/Visual Basic;Java;dotnet=Other .Net language;other
radio||employertype|What type of company do yo work for?||student;non-profit;smallbiz=small or medium commercial business;bigbiz=large business/enterprise;government
hidden||referrer||cookie=referrer
textarea|wysiwyg=t|about|Enter your bio
}}}