remove any unwanted features and interface from Rocket.Chat

[jeffreywescott]

We need a way to disable "default" Rocket.Chat features and interface. For example:

• disable user changing user profile information or avatar from within Rocket.Chat
• unwanted extra slash commands (e.g. /tableflip. why.)
• (more -- what else?)

[jeffreywescott]

unable to remove rocketchat:ui-account package, because if it's not present, this error occurs when the page loads (in browser JS console):

Error: No such template: avatar
    at blaze.js:3147
    at .<anonymous> (spacebars.js:66)
    at blaze.js:1872
    at Function.Template._withTemplateInstanceFunc (blaze.js:3671)
    at blaze.js:1870
    at Object.Blaze._withCurrentView (blaze.js:2211)
    at viewAutorun (blaze.js:1869)
    at Tracker.Computation._compute (tracker.js:349)
    at new Tracker.Computation (tracker.js:237)
    at Object.Tracker.autorun (tracker.js:588)

[jeffreywescott]

Removed:

• rocketchat:slashcommands-asciiarts
• rocketchat:slashcommands-kick
• rocketchat:slashcommands-me
• rocketchat:slashcommands-mute
• rocketchat:slashcommands-topic

[jeffreywescott]

I've changed the settings in production so that users cannot edit their profile or username.