docs: det updates (#504)

* docs: det token updates

* docs: more det token info

* docs: add summary of available token actions

* docs: add token creator screen details

* docs: update screenshot

* docs: misc trivial updates

* docs: token updates

* docs: add token group actions screen info

* docs: add token actions example screenshots

* docs: add note about mac security settings

* docs: update det config section

Hide advanced config inside a dropdown to prevent confusion since most people won't use it

* docs: clarify core wallet info

* docs: update network selection text and screenshots

* docs: update load identity screenshots

* docs: add missed screenshot

* docs: update identity create and topup screenshots

* docs: add missing screenshot

* docs: update identity transfer and withdraw screenshots

* docs: update screenshots for name registration

* docs: remove unused images

* docs: update wallet screenshots

* docs: add missing wallet screenshots

* docs: update dpns voting screenshots and process

* docs: update most token screenshots

* docs: update token group screenshots

* docs: add more dpns screenshots

* docs: formatting

* docs: update/fix action rules

Author: thephez