Update README with expanded install docs
Add basic handler for contractor emails
Refactor emailer module to take email object
Add weeklyContractorEmail handler hook
Fix and extend emailer module tests
Fix tmp handler and test
Update emailer README
Fix logging output
Add auto email.text from email.html when required
Refactor incident emailing to use new emailer
Improve incident email logging
Merge pull request #7 from mediasuitenz/add/tmp-weekly-contractor-email#312

Add/tmp weekly contractor email#312
Add weekly email reminder handling, fix gui app redis port, refactor emailer module
Update .env-example files to split into dev/prod.

Split these like we've done with Forward Works because there are some crucial different values in the prod one (e.g. SYSTEM_EMAIL, which is changing in this ticket).  Should be easier to track these now.
Removed end date and time from incident emails.
Update to new tfc.govt.nz domain.
Move handlebars helper into new sub-directory.
Remove seconds from time display.
Change wording and field order.
Close unclosed <br /> tags.