implementing mksendmanytx

A simple argument parsing change from mktx to allow passing multiple recipients
implementing paytomany (untested)

Just like mktx/payto, this is only submitting the tx created in mksendmanytx
Latest wikia version [tested]

Latest wikia version tested before making the PR
Update default fee in help text
Fixes the QR code widget to include a 10px margin to offset the widget on dark theme background.
Updated the QR Code plugin to enable offline/online wallets to transmit unsigned/signed transactions via QR code.
Merge pull request #214 from rdymac/patch-9

Latest wikia version [tested]
Merge pull request #215 from linhlarry/master

Update default fee in help text
Merge pull request #221 from EnigmaCurry/fix-qr-margin

Fixes the QR code widget to include a 10px margin to offset the widget on dark theme background
Merge pull request #227 from tigereye/master

Sending/Receiving unsigned/signed transactions via QRCode
fix indent
fix indent
Skeleton for menu
new methods: init_menubar and load_wallet
Implemented all menu triggers
Added CTRL+R to refresh your wallet
Removed accounts from menu
Make backup use real wallet from config
Make backup use real wallet from config
Open wallet should use current wallets folder as default dir