Add a couple of new words to the spellchecker wordlist.

Document new PERMANENT_FREEZE env variable.

Adjust pyftpdlib installation for python2 to avoid recent 2.0.0 relea…

…se which requires python3.

Use a more portable file reader which does not require GNU Make 4.2  .

Another minor spellcheck addition.

Moved 'pip' certificate env-variable to include the pdfkit install

Rephrase the WAYF certificate part.

Force cheroot version before 10.0.1 as the recent release causes webdavs

service crashes e.g. when security scanned.

Add missing quotes around generateconfs value potentially with spaces…

… in it.

Another ignore from spellchecker