Log to standard Rails log location APP_ROOT/log

This is symlinked to [vhost]/applogs in a post deploy exec in vhosts.pl
Ignore stray Vagrant files and log directory
Allow response to vexatious requests to be submitted without response input

Silently replaces the blank public_part field with the text
"Rejected as vexatious" to preserve the expected data structure.
Keeps the submitted response if the responder has provided one.
Remove delete option from admin forms
Route "Respond" link to request_path as per the Request title link

Also removes new_response_request_path route as it's no longer used
Change button text to "Submit Response"
Prevent response being submitted with request state of New
Remove ability for admins to set status when creating requests
Stop settled requests showing as overdue
Fix bug in email address validation
Add meta charset to admin layout
Ignore stray Vagrant files and log directory
Discard invalid results before running select
Merge branch 'issues/197-some-searches-cause-an-error'
Impose date ascending order on Request.count_by_month
Merge branch 'bug-fixes'

Conflicts:
	.gitignore
Revert earlier changes to email address validation
Merge branch 'issues/200-fix-foi-fetch'
Test requestor email address is not nil or blank before sending acknowledgement
Merge branch '203-fix-blank-ack-email-address'