Added Markdown rule to editorconfig

fixes and typos in en_US lang files

Fix status icon of unpaid invoices box

Conflict with ModSecurity solved in facture.php.

Fix: install with mysql 5.7.9

New TVA for Greece 24%

Fix #5350 date_pointoftax prevented creating invoices

FIX a task without project inclusion call a non included object Link

Conflicts:
	htdocs/core/lib/project.lib.php

and profid does not exists for other countries

Conflicts:
	htdocs/compta/facture.php

and profid does not exists for other countries

FIX Compatibility datee and date_end for warning of tasks

When ModSecurity is enabled on apache server then "scandir" is forbidden word. When changing numbering model then you will find following error in apache log: 
ModSecurity: Access denied with code 403 (phase 2). Pattern match "(?i)(?:\\\\b(?:f(?:tp_(?:nb_)?f?(?:ge|pu)t|get(?:s?s|c)|s(?:ession_start|candir)
I have changed "scandir" to "scan_dir".

analyse POST only.

background on menu is still full of top menu color