Omit attribute 'format' from SpecifLanguageText

[odungern]

For property values of type string, there is no reason to have formatted text in one language and plain text in another. Also there is the possibility to specify the format for a propertyClass.

Thus, omit attribute 'format' from SpecifLanguageText.

[odungern]

For SpecIF Schema v1.2 this attribute has been removed. The same attribute shall be used with propertyClasses, instead. There is no effect on the power of expression.

Do only mark DEPRECATED instead?

[odungern]

According to schema v1.1, the 'format' attribute of SpecifLanguageText is not only used with values of class-defined property values, but also with native attributes such as item descriptions.

So we either firmly define which native attributes are either plain or xhtml-formatted, or we allow the format attributes for those.

[odungern]

'formatted' omitted from 'SpecifPropertyClass', as it is only meaningful, when a string dataType is assigned.

[odungern]

Omission reversed - too many logic changes would be needed at present.