Dont use fixed pixel size if form controls - its bad for mobile devices

app/assets/stylesheets/generic/forms.scss

app/views/admin/groups/index.html.haml

app/views/dashboard/groups/index.html.haml

app/views/explore/groups/index.html.haml

app/views/explore/projects/_filter.html.haml

app/views/groups/group_members/index.html.haml

app/views/projects/project_members/index.html.haml

app/views/search/_form.html.haml

app/views/shared/_issuable_search_form.html.haml