Merge branch 'position-notification'
Position: Remove at-center guards, take at:center into account instead. Fixes #8127 - collision:flip should be supported for at:center
Grunt: Update to latest grunt-compare-size plugin
Accordion: Removed unused variables.
Fix various issues in our html files, fifth batch
tests visual position: minor refactor
Grunt: Ignore ajax content test files in htmllint task
Position: Fix markup for deprecated tests. Insert/remove some new lines to make comparision to position.html trivial
Partial revert to fix IE6 regression in 258a637
Grunt: Ignore core unit test markup for htmlllint until that codebase attribute can be replaced
target variable is already defined
Merge pull request #641 from lukaszlipinski/master

simulate: Removed duplicated variable declaration
Grunt: Update to grunt-css 0.2.0, includes better logging and some bug fixes
Grunt: Experimental testswarm integration
Autocomplete combobox demo: Define this.wrapper for use inside destroy().
Removed some unused variables.
Grunt: Extend list of tests to run with TestSwarm
Grunt: Fix testswarm urls
Core tests: Coding standards.
Tests: Run JSHint.