UPDATE : Development to Master - RC1

This will be one of our last merges from development to master. Rejoice, our first release is not far anymore! We could even go as far and call this PR, once merged into master, our RC1 :dancer: 

# Changelog

* ADDED : #2063 - Setting to add a MOOT board
* ADDED : #2088 - Pool Newsletter
* CHANGED : #2080 - Display n/a as hashrate and next diff if we have no hashrate available
* CHANGED : Donors page can now be found under Statistics
* FIX : #2096 - Sending mails with no address setup (Swiftmailer Exceptions)
* FIX : Typos
* FIX : #2076 - Display popups again when re-logging in or changing MOTD
* FIX : PPS Value on Dashboard after Ajax Refresh
* FIX : PPS Unpaid Shares on Dashboard after Ajax Refresh
* FIX : PHP Warnings on 0 network hashrate operations
* FIX : Various style updates
* FIX : #2074 - Responsive tables 
* FIX : #2083 - Number Format in Block Overview
* FIX : #2084 - Table Fixes, Typos and Styles
* FIX : #2086 - Hide/Show QRCode Page in Account

# MOOT Board

This is an external service that allows you to integrate their forum rather easily. It's not as full features as some may be used to but it's a great starting point for new pools.

This is not something we coded, it's a third party service that we allow you to integrate into the navigation bar. You can read more about their product here: https://moot.it/

# Newsletter

Yes, you read that right! We have now added the ability to send a newsletter to all your users. Some things to keep in mind:

* With a large mail volume, ensure you use a locally running MTA for a mail queue
* SMTP mails are also possible but will be throttled to 100 messages per minute
* Mails are HTML - be careful what you add in the Markdown Editor ;-)

A new config option was added to the Swiftmailer configuration to change the default throttle limit. The Wiki was updated accordingly.