layout overview page for mobile

[dreacot]

closes #125

This MR lays out the overview page for mobile, it does not include api/live data implementations, those would be broken down into different PRs. also the desktop is yet to implement live data for some cards, once those are done there would be follow up issues to populate the cards respective cards. The aim of this PR is simply to provide overview layout for the mobile apps

[dreacot]

@Sirmorrison pointed out an issue with the asset balance slider #118 (comment) that causes the radius to look weird

[JoeGruffins]

Working well for me on android.

[JoeGruffins]

@Sirmorrison pointed out an issues with the asset balance slider #118 (comment) that causes the radius to look weird

Also cannot flick the slider to see other coins.

[dreacot]

@Sirmorrison pointed out an issues with the asset balance slider #118 (comment) that causes the radius to look weird

Also cannot flick the slider to see other coins.

Actually the slider shows the total balance for all asset type, e.g (if you have 3 dcr wallets, it sums up the balance and displays on the dcr asset slider, if you have no other btc/ltc, you won't see the sliders for btc/ltc).

But if you're referring to a fluid transition between sliders, when you flick them, then yes, that would make a lot of sense and would be desirable. We opted not to implement that initially for simplicity.

But I'd create an issue so the sliders can be enhanced

[dreacot]

@Sirmorrison pointed out an issue with the asset balance slider #118 (comment) that causes the radius to look weird

this is the issue in question #140