doc and monitoring cleanup
feedback from cvan and mstriemer
HOSTNAME is used in a few places, but its different from DOMAIN
Merge pull request #2271 from andymckay/doc-fixin

doc and monitoring cleanup
Commit from Mozilla Verbatim by user yfdyh000.: 2035 of 2035 strings translated (0 fuzzy).
Merge branch 'master' of ssh://github.com/mozilla/zamboni
Commit from Mozilla Verbatim by user ibai@oihanguren.com.: 1104 of 2035 strings translated (0 fuzzy).
Commit from Mozilla Verbatim by user ibai@oihanguren.com.: 1140 of 2035 strings translated (0 fuzzy).
Commit from Mozilla Verbatim by user ibai@oihanguren.com.: 1158 of 2035 strings translated (0 fuzzy).
Commit from Mozilla Verbatim by user ibai@oihanguren.com.: 1168 of 2035 strings translated (0 fuzzy).
Commit from Mozilla Verbatim by user ibai@oihanguren.com.: 1187 of 2035 strings translated (0 fuzzy).
Commit from Mozilla Verbatim by user ibai@oihanguren.com.: 1193 of 2035 strings translated (0 fuzzy).
Commit from Mozilla Verbatim by user havarh.: 403 of 2035 strings translated (0 fuzzy).
Commit from Mozilla Verbatim by user ibai@oihanguren.com.: 1197 of 2035 strings translated (0 fuzzy).
Commit from Mozilla Verbatim by user theo.chevalier11@gmail.com.: 1992 of 2035 strings translated (0 fuzzy).
Added support for hidden apps (bug 1019249, 1019251)