Make layout and display nicer for very low resolutions.  Associated niceties and structuring.
Remove just-added room overflow list pull changing for low widths
make login screens behave more nicely at lower resolutions
fix typo in notification class
Improve margin, centering and make text smaller for "drop files here" overlay.  Add responsive style for even smaller text.  Fix top position on overlay when we have the collapsed-height version showing
Merge pull request #1045 from JabbR/smaller-resolution

Make smaller resolution devices behave better