add send email option on Prayer Request creation
Merge pull request #267 from georgebejan/master

 Add option on Prayer Request to send as email to the group.
Remove old stuff.
Remove trailing white space.
Also allow sending prayer request via email on update.
Coding style

* Use `order(:attr)` or `order(attr: :desc)` when possible
* Align scope definitions
Refactor for clarity

* move condition for sending email to a separate method for clarity
Improve prayer request email

* add group name to email subject
* add answered date and answer text to email body
Fix email subject in test
Fix printing of group member list [fixes #264]

* stop hiding forms
* make table full width
* fix width of avatar column
Remove old stuff
Fix group linked and parents_of indicators
Change settings for houndci
I18n Notifier, fix some bugs [fixes #143]

* fix bug sending profile update
* add tests for different rejection paths
* remove outdated code
* add better heuristics for finding proper sender account
Dedent private methods
Fix some style inconsistencies
Add worker instructions to readme - #269
Tweak some styling for tasks, fix some bugs

* fix bug showing comment count
* change some icons
Fix setting date on task

* extract date setting to concern
Add Waffle.io badges to readme