Revert "Code refactoring. Improve folder structure. For better project implementation. Most hosting server have a default folder public or public_html insted of htdocs, htdocs is a exclusive folder for apache web server, for example is no the same folder in NGINX."

This reverts commit e91c2c6e.

Code refactoring. Improve folder structure. For better project implementation. Most hosting server have a default folder public or public_html insted of htdocs, htdocs is a exclusive folder for apache web server, for example is no the same folder in NGINX.

This commit consists of patches automatically generated for this project on https://scrutinizer-ci.com

missing import_key field, ref generator parameter must be task not
project, import must use css, serious database integrity problem
accepting duplicate tasks.

Uniformize code

enabled like for propal, order and invoice
The new event is linked to the project