rpcEndpoint is hardcoded to /transmission/rpc rather than referencing the transmission config file

[markymarknz]

combustion/src/stores/prefs-store.js

Line 36 in 30bdfe6

@action rehydrate({ statusFilter = -1, sortCriteria = 'name', sortDirection = '', compact = false, skipUpdate = false, rpcEndpoint = '/transmission/rpc' } = {}) {

I have been testing out using a non-standard rpc-url setting in the transmission config yaml file and found that using this theme it would constantly re-prompt for authentication.
Looking through the logs I found that the POST back from the server was not respecting the rpc-url settings in the config file.
Looking through the repo it looks like there is a hardcoded reference to /transmission/rpc as per the link.
I like the theme but it would be good to get this sorted.

Thanks