Trim whitespace from text entry fields

[hal0x2328]

Neon should trim any leading or trailing whitespace from text entry fields such as the address entry in the send dialog. Currently any whitespace in that field will cause the address to read as invalid and the send button is greyed out. This can be confusing to users who have copied and pasted an address with a leading or trailing space accidentally (which is quite easy to do at smaller resolutions).

[github-actions]

This issue is stale because it has been open for 14 days with no activity. It will be automatically closed in 7 days from now if no activity is detected.

[github-actions]

This issue was closed because it has been inactive for 7 days since being marked as stale.