Fixes #409
Merge pull request #423 from SpiderOak/issue-409-passcode-challenge-layering

Issue 409 - passcode challenge layering
Remove login username case sensitivity.

This is ready in we get agreement to remove the case sensitivity
requirement.  The change does not affect the ongoing allowance for
complete difference between login name and username, eg for customers of
blue services.
Fixes #374

Also fixes up a couple of longstanding but elusive bugs relating to refreshing favourites and multiply binding the refreshAll button
Would probably help if I actually put the code in the right place *sigh*
Merge pull request #424 from SpiderOak/issue-374-favorites-migration-and-fixes

Issue 374 - favorites migration and fixes
Wrap some long lines.
Condition on result of call, rather than existing of function!

This is a small test for an unlikely condition, but should be corrected.
Merge pull request #426 from SpiderOak/remove-username-case-sensitivity

Remove login username case sensitivity.
Fix server address settings change so it properly logs out the current
account, if any.

The probe for the new account was inadvertantly logging out the current
account, partially, on failure of the login probe (due to false
credentials), disrupting the provision to fully log out on successful
server address change. To correct for that, prevent any login status
changes if an alternate host address is being probed.

For consistency, we also prevent follow-through on login success, even
if the credentials succeed.

Additionally, remove some obsolete residual comments, including one
concerning enforcing case sensitivity.
Merge pull request #430 from SpiderOak/issue-428-fix-server-address-logout

Issue #428 - Fix server address settings change so it properly logs out the current account, if any.
Fix apparently incorrect template format for sizes and devices.
Merge pull request #433 from SpiderOak/issue-432-account-view-sizes

Fix apparently incorrect template format for sizes and devices.
Fixes #436

Stay logged in was being removed from the settings but not from the accountModel.
Merge pull request #437 from SpiderOak/issue-436-stay-logged-in-retention

Issue #436 - Stay Logged In retention
Fixes #435

Trying to move the string substitution to LoginView:render()
No reason for this early return statement either.
Merge pull request #438 from SpiderOak/issue-435-disappearing-login-text

Issue #435 - Disappearing login screen text
android:versionCode bump for public beta
Version bump for tagging 2.9.0