general styles for the content area
replace personalblock fieldset with section div in admin and personal settings
replace personalblock fieldset with section class in files apps
replace personalblock fieldset with section class in core user_ apps
remove CSS rules for personalblock, remove it from core
replace last personalblock fieldset within files_external
external storage: fix merge conflict, indentation
Merge pull request #7915 from owncloud/replace-personalblock

Replace personalblock with .section