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.

Fixed: For salaries in bank module : missing language file & simplify thidparty column (Informations are truncated by default)

Add control on batch movement (lot/serial is mandatory, and control
eatby and sellby are same for each lot/serial)

This patch was automatically generated as part of the following inspection:
https://scrutinizer-ci.com/g/eldy/dolibarr/inspections/128b4bb3-f689-4974-8fd7-a7b93d012d3f

Enabled analysis tools:
 - PHP Analyzer

doesn't work

http://php.net/manual/en/language.basic-syntax.phptags.php

(module dedicated to manage salaries and salary payments).
Qual: Also module for employee to declare trip and expenses has been
moved into same place than module for employee to declare holidays
(into HRM top entry). It is not an accountancy module so no reason to
have it into entry "Accountancy".

Necessary for future hrm module.