Werk #2670: Fix problem that no site is configured when user has deleted only site

Component User interface
Title Fix problem that no site is configured when user has deleted only site
Date Oct 29, 2015
Level Prominent Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed
Checkmk versions & editions
1.2.7i4 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)
1.2.8b1 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)

This problem was introduced by dropping the "single site" mode internally totally in version 1.2.7i3 and treating a single site setup automatically as multi site setup with just one site. The problem occurred when you had sites = {} in your configuration (instead of having no sites = at all).

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