For checkboxes and text input fields, not only for buttons.
Fix missing space between input and submit button in search2, too.
Follow up: Ia608324703987371aa66beccbac962024fc6e897
Bug: T63526
Change-Id: Id9fb22885b836c0dfe6a086e2ec45e2018244210
If the user does not enter a title in the <inputbox> for type=create
and hits the submit button, it opens the Main page for editing (or
view-source) due to empty title= param in URL. Greying out the submit
button until user enters the title solves the issue.
Bug: 61606
Bug: 62975
Change-Id: I5c6c34b90c6c499ef7cb96ad8d47fdbbcbbcd8a8