hide diam calc total field when only one trunk

fixes #655 on github.

Instead of having a readonly input field, the input field used for the inlineEditForm is now totally hidden. In addition, there is a input field underneath the worksheet that will show the total when multiple trunks are added.
Merge pull request #773 from steventlamb/bug/655/diameter_calculator_total

hide diam calc total field when only one trunk
Use more permissive url pattern (allow @.+=) for user profile.

PR #774 addressed this for the instance-level urls which redirect to the
site-wide user profile, but missed the urls for the site-wide user profile.
Merge pull request #778 from maurizi/master

Use more permissive url pattern (allow @.+=) for user profile.