Update release config for Fennec-31.0-build1

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branch : production
Added tag FENNEC_31_0_BUILD1, FENNEC_31_0_RELEASE for changeset 18dbe9bfbaf1

--HG--
branch : production
Update release config for Thunderbird-24.7.0-build2

--HG--
branch : production
Added tag THUNDERBIRD_24_7_0_BUILD2, THUNDERBIRD_24_7_0_RELEASE for changeset 1b5cc1b4801f

--HG--
branch : production