ME|WM: upload button disabled before file selection
ME|WM: fixed form flow issues
ME: added file selected to label via clojurescript
ME: code refactor; functionality moveed to clojurescript
ME: added comment description of function and fixed failing test
ME: add a block statement (using 'do')
PLD: do not set file value, this is a disallowed security violation
RR/ME: show form settings dialog on click next
RR: set last modal dialog
PLD: handle-file-selected and form-settings tests
PLD: refactor to use io helper
Merge pull request #639 from onaio/597_add_form_flow_fixes

597 add form flow fixes