Merge pull request #57 from kurund/4.5-1.8

updated stripe to v2, make compatiable with webform_civicrm, code cleanu...
Use Civi constants to customize webhook alert on enable
Merge pull request #58 from Swingline0/better-webhook-paths

Customize webhook alert on enable to use UF relative path
more js fixes and code cleanup
Merge pull request #64 from kurund/js-fixes

more js fixes and code cleanup