[Enhancement] Webapp portfolio / asset value improvements

[0byt]

Issue 1: Add total values to Locked and Available

Issue 2: Asset total should only be total of assets

Issue 3: Value in account picker should include assets + crowdloans + staking

Issue 4: Add staking total value in staking section

Issue 5: Move show/hide assets to account picker

Issue 6: Reconsider portfolio allocation graph positioning

Issue 7: Reconsider search bar positioning / utility