This change check the correct member of the data structure
for the keyman bundle install file. It also uses a more
simple string match for the file extension.
Starts to refactor the online update check in Windows so that the
results are stored to disk and can be checked at any time. This commit:
* removes keepintouch frame
* adds update frame
* adds serialization of update check data
* presents the serialized update check data in the update frame
Online updates won't currently work.
