Sort ERC-20 tokens alphabetically on the page for creating a new bounty

### User Story

As a bounty creator, I want the list of ERC-20 tokens to be sorted alphabetically so that it will be easier to find the token.

### Why Is this Needed

[comment]: # (Describe the problem and why this task is needed. Provide description of the current state, what you would like to happen, and what actually happen)
*Summary*: At https://gitcoin.co/bounty/new the ERC-20 tokens in the drop-down are not sorted by name, making it more time-consuming to select the token. Yes, I know there is a search feature, but some users will still want to scroll through the list of values.

### Description

[comment]: # (Feature or Bug? i.e Type: Bug)
*Type*: Feature.

### Current Behavior
[comment]: # (Describe what actually happened.)

### Expected Behavior
[comment]: # (Describe what you expected to happen.)
The drop-down values should be sorted by name (except ETH and DAI).