fixes #255
new function get_formatted_filesize
remove unnecessary vars
change wording of max backup size
move the max backup size after description
fixed bug in colorbox error message display
Merge branch 'master' into dev
indentation
Merge branch 'master' of github.com:humanmade/BackUpWordPress into dev
fixes #262
corrected typo in message text
add activation function and internationalize message
fix docblock
remove duplicate activate function causing fatal error
just some indentation
use constants in schedul intervals
added missing schedules param and merge custom schedules
schedule enhancements
updated schedul interval name with prefix in several locations
update interval names in more places to avoid fatal errors