[Mobile] IN PROGRESS: General fixes, spurred by mobile, for object-header

open #74
Attempting to layout using flex - not working;
See http://jsfiddle.net/charlesh88/cpf9zjts/9/ for working example;
New _flex.scss added;
This commit is changed elements that are mostly solid;

platform/commonUI/general/res/sass/_main.scss

@@ -53,6 +53,7 @@
 @import "edit/editor";
 @import "features/imagery";
 @import "features/time-display";
+@import "flex";
 @import "forms/elems";
 @import "forms/validation";
 @import "forms/text-input";