Bluetooth Improvements

[lemeryfertitta]

Just starting a catch-all thread here for various bluetooth-related improvements. This one can be used for discussion and spin-off issues can be created as needed. Some ideas I had immediately from using it for the first time:

1. The lightbulb symbol could change to be a filled in symbol when connected. There is also an "off" icon available through bootstrap that could be useful. https://icons.getbootstrap.com/?q=lightbulb
2. Current behavior requires clicking on the lightbulb each time to light up a climb. In my experience, this is a hotly debated feature. When you're boarding alone, its much nicer not to have to keep clicking the light bulb, so you can just swipe through climbs and see the LEDs update. When you're with a group, its nice to be able to look at climbs without affecting the current LEDs so you can pick your next climb while others are still climbing the current one. This feature could work in both cases by using an explicit disconnect (i.e. click the lightbulb again) to avoid changing the lights when picking a new climb.
3. Navigating away from the results (or create) page requires re-pairing when returning to the page. For example if you light up a climb, change filters, then light up another climb. This requires a pairing dialogue both times. It would be nice to cache the connection in a way that avoids this (when not switching boards).