rm instance settings title
do not escape title definitions

When the definitions are used they will be escaped a second time

This commit is very incomplete
fix file upload in overlays

To include files in our upload this uses the FormData API.

Unfortunately, FormData is only available in IE 10+. In
older IEs, the whole form will be unusable.

To limit the damage this does only use FormData where necessary.
use FormData whenever available

This is an improvement because now forms with
enctype="multipart/form-data" will non break completely
on non-supporting browsers
add warning to ajax form submit for old browsers
avoid cyclic redirects with logos
abstract overlay.close
close overlays on esc (fixes #598)
remove background gradient from forms

its hardly noticable and distracting when the form is
on front of a grey background
i18n
fixup breadcrumbs
rm js tooltips (fixes #208)

The JavaScript tooltips we are using are buggy.

I see no real reason why we use the in the first place
because the tooltip implementation in browsers is quite good
and probably has benefits in terms of accessibility, too.

So this removes the js tooltips.
add .text as UGC
create proposal row_inline
refactor proposal code
add proposal text
add proposal comments route
Merge pull request #729 from xi/feature-598-fix-overlay-esc

fix overlay esc
Merge pull request #731 from xi/feature-208-rm-js-tooltips

rm js tooltips (fixes #208)
use overlay's native close()