Post subjects cannot be nil
Do validation for empty and spaces-only strings
Replace blank/nil notification subjects with (no subject)
create admin and wrangler users in dev environment
One-off rake task to clean up empty notification subjects

Also fixed admin_user task to use login_name (case sensitive) rather
than the id-like stub generated by friendlyid (always lowercase).
added planting counts to crop pages
Merge pull request #195 from Skud/plantingcounts

added planting counts to crop pages
Merge pull request #192 from Skud/roleseeds

create admin and wrangler users in dev environment
Merge pull request #194 from Skud/empty_subjects

*crosses fingers*
fixed linebreak causing syntax error
Merge pull request #197 from Skud/empty_subjects

fixed linebreak causing syntax error
Merge branch 'dev' of https://github.com/Growstuff/growstuff into dev
Replace name validation with before_filter and add rake tast for empty names. Replace validation testing with before_filter tests.