Updated dependencies to Umbraco 7.1.5
Merge remote-tracking branch 'origin/master'

Conflicts:
	build/Buzz.Version.props
	build/NuSpec/Buzz.Hybrid.nuspec
	src/Buzz.Hybrid/Configuration/BuzzHybridVersion.cs
	src/Buzz.Hybrid/Properties/AssemblyInfo.cs
Missed proj file
Merge pull request #5 from naepalm/master

Moved the content extensions for IImage and IMediaFile public from internal
Merged in Janae's updates and bumped patched version
Added event to LinkHelper to fire before adding a LinkTier to aLinkTier
Patched event handler to check for null listeners
Added GetSafeDateTime content extension and patched issue with GetSafeMediaFile