ZenCoding: Minor tweak to fix formatting
Image Paste: Fixed pasting from PowerPoint etc.
Build: Show "Build failed" status bar. Fixed #561

Only run the minification, linting and compiler tasks if the build
succeeds. Otherwise show "Build failed" in the status bar.
Test: Refactored TypeString to Utility class
ZenCoding: Added tests
ImageDrop: Removed till ready
Sprite: Moved XML comments
Minify: Don't gzip .map files.

Source maps are development time only. Gzip files are meant to be
published to CDNs and it is very unlikely that source maps will be
published there.
JSHint: Adding "angular" to globals
CSS: Added classifier for !important
Feature: Added support for JSCS.
Code: Cleanup and formatting.
Merge pull request #569 from am11/master

Feature: Added support for JS Code Style checker - JSCS (#532)
PreBuild: Rescue from NullReferenceException.
ZenCoding: Updated with fixes for #568.
Merge pull request #571 from am11/master

PreBuild: Rescue from NullReferenceException
JSCS: Prefix service name with error message.
Merge pull request #572 from am11/master

JSCS: Prefix service name with error message
JSCS: Avoid duplicate entries in the Error List
PreBuild: Minor fix.