Nive-userdb

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- refactored previous package nive -> nive, nive_cms, nive_userdb
see packages.txt for changed imports

This package ('nive_userdb') contains only the content management system
and is based on the package 'nive'. In previous versions this was part of
the package 'nive' (nive_userdb).

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Preparation for 1.0 release
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Change history 'nive':

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- new sessionuser with limited functionality for caching
- added serialize and deserialize callback option
- user identity field added
- enabled non-class functions as event callbacks
- nive.utils.dataPool2.connections refactored
- added support to view.Assets() for url links e.g. http://example.com/assets/jquery.js
- bugfixes and improvements

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- maintenance and bugfixes
- added IFileStorage interface for file classes used to read and store file data
- renamed cms.pages.skipColumn parameter to addColumnContents
- extended definitions.ViewModuleConf with renderer attribute as default for views
- HTMLForm action button postfix changed to class var actionPostfix
- nive.container: added afterAdd event, renamed beforeCreate -> beforeAdd

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- bugfixes: sort and ajax response
- improved column integration
- css and js assets configureable design.configuration.assets
- cms editor widgets css updates
- added sort and cut, copy, paste tests

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- editor ui improvements
- welcome message
- scaffolds improved
- mysql tests improved
- bugfixes

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- scaffold base64 password bugfix
- converted cmsview javascript to jquery plugin
- added cmseditor.js, removed pe.js and overlay.js
- added cmseditor.css, removed pe.css
- added Undo() on sql execute exceptions