Bug 956190 (part 5): Merge attachment.css, dependency-tree.css, enter_bug.css and show_bug.css into bug.css
r/a=justdave

Update .bzrignore to remove docs/en/latex directory and add docs/en/pdf/ directory. r=LpSolit; a=justdave.

https://bugzilla.mozilla.org/show_bug.cgi?id=968788

Fix problem of variables not being replaced in RTD documentation by removing references to them. r=LpSolit, a=justdave.

https://bugzilla.mozilla.org/show_bug.cgi?id=964849

r=glob, a=mkanat

r=glob, a=mkanat

r=mkanat, a=mkanat, a=LpSolit

r=mkanat, a=mkanat

r=LpSolit, a=LpSolit