Hide link to creating homepage topic (Fixes pivotal 78787638)

* Constrain maximum site width to 980px
* Fixes pivotal 78787638
Make per basket searches work. Fixes #78787590, #78787654
Merge branch 'kete2' into ek-fixes
Merge pull request #52 from kete/ek-fixes

Fix a number of bugs (details in pivotal)