Major CSS revamp

- Get rid of Bootstrap (except we still rely on some JS)
- Use BEM class names
- Rework variables/theme config
- Fix various bugs, including some on mobile

The CSS is still not ideal – it needs to be cleaned up some more. But
that can be a focus for after beta.

less/lib/lib.less

@@ -0,0 +1,30 @@
+@import url(http://fonts.googleapis.com/css?family=Open+Sans:400italic,700italic,400,700,600);
+
+@import "font-awesome.less";
+@fa-font-path: "/assets/fonts";
+
+@import "normalize.less";
+@import "print.less";
+@import "scaffolding.less";
+@import "sideNav.less";
+@import "mixins.less";
+
+@import "App.less";
+@import "Alert.less";
+@import "AlertManager.less";
+@import "Avatar.less";
+@import "Badge.less";
+@import "Button.less";
+@import "Checkbox.less";
+@import "Dropdown.less";
+@import "Form.less";
+@import "FormControl.less";
+@import "LoadingIndicator.less";
+@import "Modal.less";
+@import "Navigation.less";
+@import "Search.less";
+@import "Select.less";
+@import "Tooltip.less";
+
+@import "variables.less";
+