Cleaning and traling commas removal
File Download fix

The file download was broken due to the Cordova and Cordova plugins
update.
Load stores at app start; no updates wating

Previously the store loading was done once the updates were
checked. This used to delay the app usage.

This commit changes the mechanism. The initial store content is
loaded so that the user can still use the app. After the updates
the new content is shown instead of the older one.
Added Note feature

It is now possible to add Notes in sections. The Note is a general
purpose page containing the title and the content. All the notes
are synchronised with the server and have the checksum version
just like the rest of the content.
Bugfix and remove of the trailing comma

Bugfix: Note tag fix. The tag variable was inside the config
of the button and not outside.