Merge pull request #183 from jay-hodgson/develop

SWC-367: remove dialog/window blink if modal, seems to be messed up on Chrome
Merge pull request #184 from jay-hodgson/develop

SWC-364: only refresh the attachments of the entity when the edit dialog is visible
Merge pull request #185 from jay-hodgson/develop

SWC-369: for the login page to render correctly in Internet Explorer wit...
Merge pull request #186 from jay-hodgson/develop

SWC-368: don't slide if Chrome
SWC-370: add ability to explicitly set the rendered attachment image size based on the width (aspect ratio is maintained). Tried to add this to the editor, but it became a confusing mess, but I think offering this advanced rendering feature via the markdown is the first step.