Werk #681: Display correct year for availability range for last month in january

Component	Reporting & availability
Title	Display correct year for availability range for last month in january
Date	Jan 24, 2014
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	1.2.5i1 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)

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