move styles into relevant child scss files
Merge pull request #681 from stellar/clean-up-css

move styles into relevant child scss files
using a stellar-agonistic font variable
changing "stellar-blue" to "brand-primary"

using bootstrap's primary color variable
using the variable for bootstrap's font stack
Merge pull request #684 from stellar/use-bootstrap-variables

Use bootstrap variables
fix send pane icons
Merge pull request #687 from stellar/fix-send-icons

fix send pane icons
The balance updated by account entry events
Merge pull request #689 from stellar/fix-balance

The balance updated by account entry events