Issue #61 - Adding tool tip to fieldname

[aywaldron]

Added display_name attribute to ait-field tag which Field.view() uses to return the following dom structure:

<ait-field> 
    <name>[display_name]</name>
    <value>[value]</field>
</ait-field>

Added css class for making name bold.

Resolves #61

[jordanpadams]

@aywaldron the solution looks good, but we also need to make sure it is backwards compatible. this blows up GUIs that don't use this new tag:

[MJJoyce]

+1, falling back to the old rendering if display_name isn't set would be good so we don't break existing stuff.

[aywaldron]

Good point. Just pushed a fix to make it backward compatible.

[aywaldron]

@jordanpadams @MJJoyce Is the build failing because of these changes, or something else?

[aywaldron]

Tests pass for me locally.

[MJJoyce]

👍 This looks good to me. Please rebase the merge commit out before we merge and open a follow up ticket so this gets added to the documentation. Thanks!