Merge pull request #2631 from blocktrron/cellular-support

package/gluon-core/luasrc/lib/gluon/upgrade/250-cellular

...ge/gluon-core/luasrc/lib/gluon/upgrade/300-firewall-rules

package/gluon-core/luasrc/usr/lib/lua/gluon/platform.lua

package/gluon-web-cellular/Makefile

package/gluon-web-cellular/i18n/gluon-web-cellular.pot

...uasrc/lib/gluon/config-mode/controller/admin/cellular.lua

...lar/luasrc/lib/gluon/config-mode/model/admin/cellular.lua