Wip/bwp improvements

[sulkaharo]

Hopefully a bit clearer messaging when <0 BWP is shown

[jasoncalabrese]

Issue found: Variable 'delta' is already declared in line 127.

[codecov-io]

Current coverage is 83.73%

Merging #959 into dev will decrease coverage by -0.06% as of fb2b6e3

@@              dev    #959   diff @@
=====================================
  Files          61      61       
  Stmts        4295    4315    +20
  Branches        0       0       
  Methods         0       0       
=====================================
+ Hit          3599    3613    +14
  Partial         0       0       
- Missed        696     702     +6

Review entire Coverage Diff as of fb2b6e3

---

Uncovered Suggestions

1. +0.27% via .../js/profileeditor.js#324...335
2. +0.25% via .../js/profileeditor.js#269...279
3. +0.23% via lib/hashauth.js#27...36
4. See 7 more...

Powered by Codecov. Updated on successful CI builds.

[jasoncalabrese]

I've been using that new times module, for the time constants. Like times.mins(60).msecs, before we had a bunch of constants with different names/values.