[FIX] Contact template: Use singular for heading

The column showed "Contacts". The second column reads "Ripple name" in
singular. Make first column title match second.
[TASK] History template: Drop headers

RT-2384
Remove the "filters" and "transaction history" titles.
[FIX] History template: Expand filters by default

RT-2384
Make the History filters open by default because we don't have that many
[TASK] History template: Restyle CSV Export button

RT-2384

- Make the History page's Date/Description/Export to CSV button the same
design and spacing as the Contacts page's Contacts/Ripple name or
Address/Add contact button

- Make sure that when you go between the two pages, the "Add contact"
button and "Export to CSV" button doesn't "jump" around. This means
moving the "Export to CSV" button to the right.
[TASK] RT-2433 UI: Back button midblue fix
[TASK] RT-2416, RT-2417 UI fixes
[TASK] RT-2418 authentication success notification size fix: UI
[TASK] RT-2419 UI: edit btn size fix
[TASK] RT-2420 UI: cancel btn size fix
[TASK] RT-2421 UI: edit btn hover bg
[TASK] RT-2422 UI: Remove btn bg fix
[TASK] RT-2439 UI: add space to btc2ripple popup
[TASK] RT-2435 UI:  BTC connect flow success msg
[TASK] RT-2420 UI: account page form xs width fix
Merge pull request #1656 from Mesrop/develop-RT-2416-17-10

[TASK] RT-2416, RT-2417 UI fixes
Merge pull request #1628 from jublonet/feature/2384-history-page-styling

[FIX] RT-2384 History template: Standardize styling
Merge pull request #1650 from Mesrop/develop-RT-2433

[TASK] RT-2433 UI: Back button midblue fix
Merge pull request #1660 from Mesrop/develop-RT-2422-17-10

[TASK] RT-2422 UI: Remove btn bg fix
Merge pull request #1657 from Mesrop/develop-RT-2418-17-10

[TASK] RT-2418 authentication success notification size fix: UI
Merge pull request #1655 from Mesrop/develop-RT-2420-17-10

[TASK] RT-2420 UI: cancel btn size fix, account page form xs width fix