Community Name requirements not clear

[jsit]

Is your proposal related to a problem?

The "Community Name" only allows lowercase letters, numbers, and an underscore. If you try to create a community name with a capital letter, the browser gives you a vague warning that it doesn't match the requirements. These requirements aren't displayed anywhere, so a user may not know what they're doing wrong.

Describe the solution you'd like

Should have some visible text saying what the requirements are for the community name.

[dessalines]

What browser are you using? This might have been added in a later commit, but I doubt it.

[jwhitmarsh]

Replicated with Safari:

[dessalines]

Seems this is a quirk of safari, not intelligently writing errors for input patterns like most other browsers: https://www.wufoo.com/html5/pattern-attribute/

If you'd like to write a safari workaround, I'd consider a merge.

[jsit]

@dessalines Might be adequate to just add something to name_explain translation:

Name – used as the identifier for the community, cannot be changed. Must contain only lowercase letters or underscores.