webui: Use sections to group options belonging together
Merge pull request #97 from vuntz/use-sections

webui: Use sections to group options belonging together
webui: Set xxlarge class on file type inputs

For text input fields that take large amount of data (like a full file +
path), setting input-xxlarge class helps with getting a proper display
when using bootstrap.
Merge pull request #98 from vuntz/webui-xxlarge

webui: Set xxlarge class on file type inputs