Support null for FactMetaData default

Shorten meta data keys for smaller file sizes

Fix deprecated usage

Support parameter meta data coming from COMPONENT_INFORMATION as well as old system

Add typeToString method

New initial connect state machine which supports COMPONENT_INFORMATION

Initial support for global plan-wide altitude mode setting

LinkInterface and Vehicle uses mutexes to synchronize writing bytes to the link instead of queued signals

Fix min/max tests

Remove altitude mode warning which was causing recursion into dialog display and view switch problems

Remove missing support for QGCView fact missing overlays

Signed-off-by: Patrick José Pereira <patrickelectric@gmail.com>

Add custom validator support

Add support for Json file string translations

Small visual tweaks and fixups for patterns

Cache new metadata if versions are equal

App messages now use simple modal message dialogs. Vehicle messages continue to use non-modal popup.

New value editing dialogs

Use only default values when running unit tests

Don't show (Rel) all the time

Change decimal futzing to bias towards specifically set decimal places value

Warn about Above Terrain usage

Separate progress bar handling for initial load, write and read batching

Allow for no default value