Form, data protection

* Added protection for input data
Tag class, revert to_html

* Reverted to_html inside tags
Settings optimalization

* Added password shield
* Fixed meta from pages file
* hash_passwd is now platform independent
Page attr passing

* Page attributes like meta tags are inherited in page tree
User rights

* Removed annoying global right for modules
* Optimized rights fetching
Database model

* Children of db model are returned indexed
Data seed

* Initial data are created dynamicaly
Dir fix
Initial data

* Initial data are forced as new objects
Make script

* Fixed package name inside metadata
Initial data

* Fixed root password
Tags, styles

* Added support for attribute style for all elements
JSON class, docs
Settings, default

* Settings are read first from default, then overriden by environment
[fix] Headers

* Headers are sent correctly