Updating CHANGES for release

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Updating downloads site page for release

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[maven-release-plugin] prepare release syncope-1.1.8

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[maven-release-plugin] prepare for next development iteration

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[SYNCOPE-531] Fix: Failed login counter not reset if log.lastlogindate==false

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[SYNCOPE-531] Fix for implementation: set last login date only on successful authentication

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[SYNCOPE-531] Changes are fine - provided small optimizations

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Merge from 1_1_X

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