Added: `pre_remove' attribute -- Allows to remove previous directory …

Quote from i-MSCP Github (1.5.x)

Code

1. Added: `pre_remove' attribute -- Allows to remove previous directory (folder xml node from install.xml files)
2. Typo

Source: https://github.com/i-MSCP/imsc…97e92f05a01953b6b1a520723