Merge pull request #1144 from GProulx/ConfigureSCSSOutputStyle

SCSS: Possible to change Output Style
HTML: Empty tag render mode. Fixed #1145
HTML: Refactored Peek Definition
Bootstrap: Remove columns validation

This fixes #1139
Merge pull request #1150 from GProulx/RemoveBootstrapColumnsValidation

Bootstrap: Remove columns validation
HTML: Refactored Peek Definition
HTML: Peek Definition for IDs
HTML: Refactored GoToDefinition
HTML: Improved GoToDef precision
Removed redundant classification types
Removed redundant classification types
JS: Added un-minify to editor context menu
JSON: Intellisense for "required" values
JSON: Refactorings
Signed MarkdownSharp.dll
Nightly v2.1.6
Settings: Better defaults. Fixed #1154
Settings: Minify bundles defaults to true
JS: Check valid textbuffer. Fixed #1105
FileHelpers: Adds BOM support via default param.
Refixes #665 and #668.