Replace page_title with page-title. Correct margin for some blocks/layouts

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

app/views/projects/milestones/show.html.haml

app/views/projects/network/_head.html.haml

app/views/projects/services/_form.html.haml

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

app/views/projects/show.html.haml

app/views/projects/snippets/_form.html.haml

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

app/views/projects/snippets/show.html.haml

app/views/projects/team_members/_form.html.haml

app/views/projects/team_members/import.html.haml

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

app/views/projects/wikis/_form.html.haml

app/views/projects/wikis/_new.html.haml

app/views/projects/wikis/edit.html.haml

app/views/projects/wikis/empty.html.haml

app/views/projects/wikis/git_access.html.haml

app/views/projects/wikis/history.html.haml

app/views/projects/wikis/pages.html.haml

app/views/projects/wikis/show.html.haml