Some minor fixes for the next release

[juanky201271]

zingo-1.3.5 (155)

• Minor texts fixes in Spanish.
• Support for Portuguese implemented.
• First screen of the App when the current wallet failed to load... If the user chose create a new wallet when a wallet file exists, then the App shows up an Alert to confirm that.
• BS Task only run in Android Oreo 8.0 (SDK 26) or higher.
• Side menu item with bigger vertical margin.
• New screen for long memos. (if the user write 3 lines the icon appears to access to another screen with more space).

Bugs:

• If the send process finished really really fast, the sendprogress promise catch that fast error.
• When spendable is 0 the user can't send, assuming that always will have a fee > 0 involved in this process.

[zancas]

rubber stamp