fix a start up crash with the sprite generator when files are missing
dont wrap the entire method in an if, just return
Changed SpriteGenerator.GetImages to return early instead of if{} else{}
Merge pull request #1673 from davidtme/master

Fix #1643 - .sass-cache location
srv-less: Implements new (v2) API.
* Fixes breaking changes for lessc.
* Explicitly remove .tscache on PreBuild.
* Fixes ServerBase and derived types.
* Renames libsass binding folder.
* Code formatting.
Merge pull request #1675 from am11/master

srv-less: Implements new (v2) API
Clean commit to fix bug #1674
Merge pull request #1654 from iamkrillin/master

fix a start up crash with the sprite generator when files are missing
Merge pull request #1676 from henrycthomas/master

fix for #1674 - Handlebars template variable name
v2.5.3