overview UI and implementation of account mixer

[macsleven]

[dreacot]

While trying the send to account, the unmixed account doesn't show

[dreacot]

I get a yellow icon for transfers, it should be gray

[dreacot]

The danger zone should be removed

[dreacot]

DCR should be suffixed after the balances

after the 2 digits after the decimal, the rest digits should be a lighter grey color as seen below

[dreacot]

1. The number of mixers running should be displayed to user
2. Under the wallet name, what should be displayed should be the "Unmixed balance" and not the "Mixed balance"
3. Clicking the arrow should take you to the wallets page

see a reference below

[dreacot]

The "Privacy is here" card should disappear after setting up the mixer

[dreacot]

The info dialog on the mixer page isn't properly formatted

see reference below

[dreacot]

The title of some mixer settings have been changed

see reference below(also note to capitalize when necessary)

[dreacot]

The unmixed balance shows an exponential value when the mixer completes

[beansgum]

1. This message should be "Set up StakeShuffle here" and it should only be shown once, currently it shows whenever I open the wallets page.

2. This dialog returns to the overview page after refreshing, it should not return again for the current app run once dismissed.

3. Overview page is still showing "Privacy is here" card after I just set up privacy. 4. Capitalise error message.

5. Capitalise "Mixer is running" and add "DCR" to the unmixed balance amount.

6. Mixed transactions should be labeled as 'Mix', modifications should be made in the transaction row and transaction details dialog title. Also, remove the double negative sign from the amount and the amount should be the mix denomination(`mix_denom` in the transaction json).

[beansgum]

The remaining fixes will be sent as separate prs.