Update references to wifiChecker.sh
Originally, the file was called enableWlan.sh , but was changed to wifiChecker.sh . Not all references were updated,
most importantly of which was the CRON ENTRY! (face palm). Updated to correct filename.
Re-add wifi checking to cron.d after update
When updateCron.py is run after an update, it blows away the existing brewpi cron.d file with the 'stock' file, containing only
one line. This fix checks for the wifi line prior to re-write and then re-adds it after the cron.d file is reset. This is also a
good place to add future checks in code for other 'modular' lines that may be added at a later date
Merge remote-tracking branch 'vanosg/cronOverwrite' into hotfix/wificheckfix