Tom cloak

* dev:
  #60 Styling "Login" and "Register" buttons in logged out state
  6 or so more fixes
  Nav: Blue arrow for active nav item is not aligned
  fixed hover for skills on profile
  a fix for image upload styling

* dev: (41 commits)
  SUP-2241, Dashboard--> "This challenge is currently paused" should have padding on challenge card.
  #60 Styling "Login" and "Register" buttons in logged out state
  6 or so more fixes
  Nav: Blue arrow for active nav item is not aligned
  fixed hover for skills on profile
  a fix for image upload styling
  fixing stackoverlow integration
  fixing image
  checkbox label size, removed extra images
  navigation fixed, new icons, new track icons
  Fixed mobile layout issue with challenges section
  another potential input fix
  SUP-2241, Dashboard--> "This challenge is currently paused" should have padding on challenge card.
  Fixed Sticky directive
  using v3 user endpoint
  SUP-2143, Dashboard--> Texts are overlapping on my challenges on mobile device.
  input test
  changes round 2
  first round of changes
  fixing test
  ...

Conflicts:
	app/my-dashboard/my-challenges/my-challenges.controller.js