Dialog for selecting whether to use an existing fabric entry or enter a new one for a particular pattern works.  Now working getting background wiring completed.
Fixed issue with failure to preserve the association between the fabric and pattern; pattern name now displays in fabric when pattern associated with it and vice versa.
Minor tweak to UI padding.
User can now select an existing fabric entry through the dialog box for a pattern.
Now properly updates previously associated pattern when changing fabric association.
Can now associate threads with a particular pattern.

KNOWN BUG in display of choosing an existing fabric when swapping amongst existing fabrics, where a pattern may be shown (incorrectly) as associated with multiple fabrics.
Added ability to remove a fabric from the pattern.  Display bug was due to ViewPager's pre-loading of fragments to either side of the current one; in order to force a refresh, I added an interface to the StashPatternFragment implemented in the host activity to trigger the refresh of all Observables (implemented by StashPatternFragment).
Working through a code review, clarifying and reviewing the flow of data.
Finished comment and code review.
Updated fragment layouts to use ScrollView, in order to allow scrolling.  Removed pattern title as title in pattern fragment because it wasn't working properly.
Merge pull request #2 from sylkai/develop

Allows associations to be set through pattern window.