server_initialization: Create Client objects for mobile/desktop.
server_initialization: Create Client objects for mobile/desktop.

This replaces the "API" client, which isn't used by any real clients,
with the "ZulipMobile" and "ZulipElectron" client strings, which are.

rht/zulip,showell/zulip,shubhamdhama/zulip,synicalsyntax/zulip,shubhamdhama/zulip,eeshangarg/zulip,showell/zulip,andersk/zulip,eeshangarg/zulip,shubhamdhama/zulip,kou/zulip,hackerkid/zulip,brainwane/zulip,zulip/zulip,brainwane/zulip,synicalsyntax/zulip,timabbott/zulip,shubhamdhama/zulip,showell/zulip,hackerkid/zulip,kou/zulip,hackerkid/zulip,punchagan/zulip,zulip/zulip,synicalsyntax/zulip,hackerkid/zulip,eeshangarg/zulip,hackerkid/zulip,eeshangarg/zulip,andersk/zulip,zulip/zulip,rht/zulip,timabbott/zulip,zulip/zulip,punchagan/zulip,brainwane/zulip,timabbott/zulip,showell/zulip,kou/zulip,punchagan/zulip,brainwane/zulip,hackerkid/zulip,synicalsyntax/zulip,synicalsyntax/zulip,eeshangarg/zulip,kou/zulip,synicalsyntax/zulip,brainwane/zulip,shubhamdhama/zulip,rht/zulip,showell/zulip,timabbott/zulip,shubhamdhama/zulip,andersk/zulip,showell/zulip,rht/zulip,andersk/zulip,zulip/zulip,andersk/zulip,timabbott/zulip,rht/zulip,andersk/zulip,rht/zulip,synicalsyntax/zulip,eeshangarg/zulip,kou/zulip,brainwane/zulip,showell/zulip,punchagan/zulip,zulip/zulip,eeshangarg/zulip,punchagan/zulip,shubhamdhama/zulip,kou/zulip,punchagan/zulip,punchagan/zulip,zulip/zulip,rht/zulip,timabbott/zulip,kou/zulip,hackerkid/zulip,andersk/zulip,timabbott/zulip,brainwane/zulip