Modern browsers allow decomposing table markup equally well as nested div
constructs, therefor migrate our <div> table markup to actual <table> tags
but keep the old table/tr/th/td CSS classes for now to allow for a smooth
theme transition.
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
Preload the uci configuration on page load to avoid accidential double
rendering of the globals section and mount overview table.
Fixes: e39ab8725 ("luci-mod-system: mounts.js: implicitely create globals section")
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
