Resolves confusing characters & warnings

[danbr]

Description

This PR updates colonyDapp to use @colony/unicode-confusables-noascii. As the name suggests, the new package does not include ascii characters (numbers are still considered) in its ruleset.
Therefore, 'm' & 'l' will not be considered worthy of a warning.

A more detailed explanation, and the hidden part of this PR:

The package unicode-confusable has a script that at build time, takes the official unicode definitions (https://unicode.org/Public/security/10.0.0/confusables.txt) and extracts to confusables.json which is then distributed within the NPM and used as the source of its decisions of confusability.

Steps followed:

• Forked unicode-confusable (currently to my github - need to move to colony)
• Updated the script to ignore ascii characters from being included in confusables.json.
• All other routines are untouched and remain the same as original package.
• Published NPM '@colony/unicode-confusables-noascii'
• Updated colonyDapp to use '@colony/unicode-confusables-noascii'

This approach should be more inline with Metamask and other users of confusable, and hopefully requires less maintenance in the future. Part of which can be 'piggybacked' from unicode-confusable

Resolves #3268

[chinins]

Nice work!

[ArmandoGraterol]

From what I could see, it's working great! Surely all the Marks and Ians in the World would appreciate this update