cleanup

for script, add pythonroot, add search text for wifiname and wifipass,
add if check on wifi so only update file when values are entered on
form.

for html, remove meta, object, javascript. fix form names for keyboard
and locale. fix keyboard and locale so only valid choices and one always
selected. added clearer placeholders for locale choices. added text
about leave wifi values empty when no wifi network used.
add placeholders/search text for timezone
cleanup timezone and rc.local update

only update timezone when needed. merge two rc.local updates into one.
cleanup script for wifi

merge two blocks for update wifi into one block
aaa