About: added link to Release Notes

* Changed other links to text links.
About: further tweaking text
migrate to API-SECRET header

@jasoncalabrese pointed out that some agents do odd things with
underscores and that using a hyphen is more common.
This also adds tests to ensure that the API_SECRET handling works as
expected.
Revert "migrate to API-SECRET header"

Cherry-picked in the wrong order

This reverts commit 8e56ef17529f3867e0d907a81f95e40276814037.
Added Battery Glyphs in preparation for display of battery percentage.
Prep work for battery status in button bar.
Changed battery glyph to `visibility:hidden`

That way the CSS and HTML can stay enabled. When we are ready to add code to ui-utils.js we can just start running.
lower case api-secret header just incase some server or user agent does wierd things
Merge branch 'rebase/settings' of github.com:nightscout/cgm-remote-monitor into rebase/settings
Last Entry: out of date colored backgrounds

Adding warning + urgent colored backgrounds when BG is out of date by 10 or 20 minutes.
no message
Stale data: strikethrough when 20 minutes out of date
Settings: Patient Name

For parents monitoring multiple kids. Replaces "Nightscout" in the toolbar.
Settings: renamed Patient Name -> Custom Title
Adding custom title to page title
Status layout: removed unnecessary font shrinkage step.
Fix truncated arrow
arrow fix
Merge pull request #58 from nightscout/rebase/settings

0.3.0
Merge pull request #51 from nightscout/rebase/settings

Add Settings