config_applications: Handle megabytes and smaller units for disk usage.
config_applications: Handle megabytes and smaller units for disk usage.

Else, they will be displayed as if they were gigabytes.  This can cause
some confusing "123.4 / 50 GB" text to be displayed if only 123.4 MB are
used.  This patch make it display "0.1234 / 50 GB", which is a bit
better.  For smaller size units, 0 is displayed.

clochix/cozy-home,jsilvestre/cozy-home,babolivier/cozy-home,clochix/cozy-home,jsilvestre/cozy-home,babolivier/cozy-home