Fixed #192.
style: trim trailing whitespaces from gui.css
chore: update css for dialog container

Make the 'dialog-attachment-point' 100% height
and allow it to scroll.
chore: fix error message for selenium 1
Merge pull request #196 from davidlinse/fix-selenium1-error-message

chore: fix error message for selenium 1
Merge pull request #194 from davidlinse/make-inputs-panel-scrollable

Make inputs panel scrollable
Fixed #193
Work on #188 - properly recording enter keystrokes in more situations.
More work on #188.