'download csv' button added to different tabs

[maxgrapps]

Added html/css for 'download csv' button to:

1. address_transaction/index.html.eex
2. address_token/index.html.eex
3. address_internal_transaction/index.html.eex
4. tokens/transfer/index.html.eex

but you need to add correct href for this buttons

[ayrat555]

it's not implemented for all these pages

[vbaranov]

@ayrat555 where does the logic exist for buttons in 1 - 4?
@maxgrapps let's comment buttons appearance everywhere except where the logic for buttons exists

[ayrat555]

@vbaranov 1 and 2

[vbaranov]

@maxgrapps

Please hide buttons for

3. address_internal_transaction/index.html.eex
4. tokens/transfer/index.html.eex

since there is no logic for those cases yet. We will uncomment when the logic will be delivered

[maxgrapps]

@vbaranov okay, done