changed create channel form and room info form

...channel-settings/client/stylesheets/channel-settings.less

...etchat-channel-settings/client/views/channelSettings.html

packages/rocketchat-theme/assets/stylesheets/base.less

...etchat-theme/assets/stylesheets/utils/_colors.import.less

...es/rocketchat-ui-flextab/flex-tab/tabs/messageSearch.html

...ages/rocketchat-ui-sidenav/side-nav/listCombinedFlex.html