Fix for progressbar styling

Modified the styling for the progressbar as the last fix didn't seem to
work in latest updates of Chrome.
Merge branch '7.2.0_progressbar' of https://github.com/bjarnef/Umbraco-CMS into bjarnef-7.2.0_progressbar

Conflicts:
	src/Umbraco.Web.UI.Client/src/views/common/dialogs/mediapicker.html
	src/Umbraco.Web.UI/umbraco/developer/Packages/installedPackage.aspx
	src/Umbraco.Web.UI/umbraco/developer/Packages/installer.aspx
	src/Umbraco.Web.UI/umbraco/dialogs/sort.aspx
Merge branch 'bjarnef-7.2.0_progressbar' into 7.2.0