Disable apply buttons when configuration is clean.

Change-Id: I1d0d03f449f41cf3d8336298f2254f34f544b089
Set focus to program/queue name when a conflict is detected.

Change-Id: I4f821baa8c6be45b216a0f568b26401ce6508432
Prompt to save queue configuration when changing tabs.

Change-Id: Ibcf6a7f8a6479ef1bd85945e0c7105189b85cfa1
Merge topic 'apply-buttons' into master

a8623e34 Prompt to save queue configuration when changing tabs.
c9f08527 Set focus to program/queue name when a conflict is detected.
007a5a95 Disable apply buttons when configuration is clean.