[WIP] Browser Testing Fixes

**All**
- [x] Check font icons (perfect for IE9+)
- [x] Gravatar link on Profile is invisible / wrong colour
- [x] Envs not deleting if heightmap / capture images are missing
- [x] The Cloning Process arrows need a higher z-index
- [x] Homepage environments cloned displaying wrong number
- [x] Using the timeline scrollbar continues to scroll the timeline onmouseup

===

**Firefox**
- [x] Homepage cube off center
- [x] The Cloning Process scroll wheel doesn't work

**Opera desktop**
- [ ] Sensitivity radio buttons have a background

**Safari 5.1.7**
- [ ] Buggy navigation menus (any company site page: don't close properly)
- [x] Bad anti-aliasing on `#user-message` (`-webkit-font-smoothing: antialiased;`)
- [x] `#page-flow` has a blue line at bottom
- [ ] ~~Full height homepage shows grey at bottom~~ ([webkit bug](http://stackoverflow.com/questions/13368471/css3-box-sizing-in-safari-not-working-when-using-display-table))
- [ ] ~~Italics are very slanted, close quote cuts off (PT page)~~ (won't fix)
- [ ] The Cloning Process scanner is misaligned
- [x] Webcam button has no feedback

**Small desktop**
- [ ] Resolution issue on the homepage with the page-flow being below the fold

**IE11**
- [ ] `#env-interface-pods` blocks model interaction

**IE8**
- [ ] `background-size` not supported
- [ ] `box-sizing` not supported
- [ ] `:not` not supported
- [ ] `transform` not supported

===

**All smartphones**
- [ ] Laggy in general (due to 3D transitions cube or parallax JS)
- [x] The Cloning Process text size
- [x] Plane cuts off on LHS
- [ ] Use 3D transitions for all animations on The Cloning Process page to improve FPS

**Dolphin**
- [x] Env imageboxes squish
- [x] `#page-flow` has a blue line at bottom
- [ ] ~~Full height homepage shows grey at bottom~~ ([webkit bug](http://stackoverflow.com/questions/13368471/css3-box-sizing-in-safari-not-working-when-using-display-table))

**MacBooks**
- [x] Scroll on The Cloning Process page with trackpad causes scrolling to bottom