UI issues

[kevit]

I just fresh enough to see issues:

1. Onscreen keyboard lack a TAB key
2. Onscreen keyboard not popping up in text fields till you open left dock
3. Dekko2 mail is removing left-to-right which is the normal way of dock opening

[guru]

@kevit Read here about how to expand the OSK:

https://gurucubano.gitbooks.io/bq-aquaris-e-4-5-ubuntu-phone/content/en/chapter12.html