fix: escape wallet table values

[1507819106zxzx-crypto]

Summary:

• Escape transaction IDs and wallet addresses before rendering them into table HTML attributes/text.
• URL-encode explorer and hash-route path segments generated from table values.
• Adds a small shared escapeHtml helper for wallet table renderers.

Why:
The normal data shape should be Bitgesell addresses and transaction hashes, but these values are still sourced from local wallet storage and remote API responses before being interpolated into HTML strings. Encoding them keeps abnormal or compromised data from breaking attributes or injecting markup in the wallet UI.

Verification:

• node --check src/utils.js
• node --check src/transactions/transactions.js
• node --check src/my-addresses/my-addresses.js
• npx eslint --rule "linebreak-style: 0" src/utils.js src/transactions/transactions.js src/my-addresses/my-addresses.js
• git diff --check

Related bounty: BitgesellOfficial/bitgesell#39 / BitgesellOfficial/bitgesell#81
Payout address if accepted: 0x4451dF3D21925eF7a62D20eEdc80B99f7140C5D2