Remove synchronous route loaders

[pshenmic]

Issue

Current page routes data implemented via route loaders, required data to be fetched first until page is rendered. That makes page synchronous, and also breaks the application in case there is an error during API request. We should remove all route loaders and make page all requests on the page asyncronous, showing the user correct UI elements (pending, success, error messages)

Possible solution

• Remove all route loaders
• Implement asyncronous data loading (same as we send state transition on decoding in transaction route)

[pshenmic]

#133
#135