tweaked kanso.json description for Timestamp Property Name
better handle exceptions in appinfo.getAppInfo().

Better error handling when trying to fetch and parse app settings throws
and exception. Fixed bug where this leaves the browser broken and
stalled in the loading phase.

Render 500 error 'Failed to retrieve settings.' when settings load
throws an exception. Kujua is effictively broken without settings or at
least won't do what you configured it do/are expecting.
Warning: settings schema now includes join_responses

Error responses message will NOT be joined by default now, only the first
validation error response is sent unless the `join_responses` setting is true.

See medic/kujua-sentinel 044018c334df0f03840331ae4eea35ac815ce3e4
updated json-forms
0.3.0-beta.35