css: Properly wrap text inside tabs.
css: Properly wrap text inside tabs.

The tabs can have text inside them that is wider than 90px, especially
in some unexpected cases (e.g. a translation longer than the original
English string).

This type of tabs can be seen in the following popover menus:

 - Stream subscriptions
 - Help (with hotkeys, formatting info, etc.)
 - Settings

Now text wider than the tab is ellipsized so it doesn't cause any
problem with the rest of the layout, except in the help popover (where
it gets wrapped).

timabbott/zulip,j831/zulip,jrowan/zulip,showell/zulip,amanharitsh123/zulip,jphilipsen05/zulip,zulip/zulip,SmartPeople/zulip,zulip/zulip,amanharitsh123/zulip,rht/zulip,ryanbackman/zulip,jackrzhang/zulip,j831/zulip,timabbott/zulip,rht/zulip,zulip/zulip,j831/zulip,zulip/zulip,kou/zulip,eeshangarg/zulip,punchagan/zulip,brainwane/zulip,jrowan/zulip,kou/zulip,andersk/zulip,Galexrt/zulip,brockwhittaker/zulip,hackerkid/zulip,punchagan/zulip,rishig/zulip,hackerkid/zulip,hackerkid/zulip,shubhamdhama/zulip,ryanbackman/zulip,shubhamdhama/zulip,synicalsyntax/zulip,showell/zulip,andersk/zulip,brainwane/zulip,kou/zulip,rishig/zulip,rht/zulip,mahim97/zulip,punchagan/zulip,punchagan/zulip,timabbott/zulip,shubhamdhama/zulip,tommyip/zulip,rht/zulip,dhcrzf/zulip,punchagan/zulip,jackrzhang/zulip,amanharitsh123/zulip,SmartPeople/zulip,SmartPeople/zulip,vaidap/zulip,Galexrt/zulip,brockwhittaker/zulip,brainwane/zulip,SmartPeople/zulip,andersk/zulip,tommyip/zulip,jackrzhang/zulip,showell/zulip,verma-varsha/zulip,tommyip/zulip,shubhamdhama/zulip,brainwane/zulip,verma-varsha/zulip,timabbott/zulip,Galexrt/zulip,eeshangarg/zulip,timabbott/zulip,showell/zulip,j831/zulip,synicalsyntax/zulip,Galexrt/zulip,jackrzhang/zulip,brainwane/zulip,vabs22/zulip,timabbott/zulip,jackrzhang/zulip,synicalsyntax/zulip,jackrzhang/zulip,dhcrzf/zulip,verma-varsha/zulip,ryanbackman/zulip,rht/zulip,vaidap/zulip,Galexrt/zulip,mahim97/zulip,zulip/zulip,jrowan/zulip,amanharitsh123/zulip,christi3k/zulip,hackerkid/zulip,synicalsyntax/zulip,christi3k/zulip,showell/zulip,ryanbackman/zulip,dhcrzf/zulip,rht/zulip,vabs22/zulip,tommyip/zulip,verma-varsha/zulip,andersk/zulip,eeshangarg/zulip,christi3k/zulip,showell/zulip,jphilipsen05/zulip,jphilipsen05/zulip,andersk/zulip,SmartPeople/zulip,andersk/zulip,brainwane/zulip,synicalsyntax/zulip,shubhamdhama/zulip,mahim97/zulip,kou/zulip,rishig/zulip,vaidap/zulip,jphilipsen05/zulip,j831/zulip,tommyip/zulip,hackerkid/zulip,shubhamdhama/zulip,brainwane/zulip,ryanbackman/zulip,christi3k/zulip,brockwhittaker/zulip,tommyip/zulip,brockwhittaker/zulip,vaidap/zulip,jphilipsen05/zulip,punchagan/zulip,hackerkid/zulip,dhcrzf/zulip,dhcrzf/zulip,vabs22/zulip,j831/zulip,jphilipsen05/zulip,amanharitsh123/zulip,showell/zulip,jackrzhang/zulip,verma-varsha/zulip,ryanbackman/zulip,synicalsyntax/zulip,christi3k/zulip,vaidap/zulip,mahim97/zulip,christi3k/zulip,punchagan/zulip,dhcrzf/zulip,amanharitsh123/zulip,eeshangarg/zulip,Galexrt/zulip,mahim97/zulip,vabs22/zulip,zulip/zulip,brockwhittaker/zulip,vabs22/zulip,kou/zulip,jrowan/zulip,hackerkid/zulip,timabbott/zulip,eeshangarg/zulip,synicalsyntax/zulip,rht/zulip,kou/zulip,eeshangarg/zulip,kou/zulip,shubhamdhama/zulip,rishig/zulip,vabs22/zulip,brockwhittaker/zulip,SmartPeople/zulip,verma-varsha/zulip,rishig/zulip,andersk/zulip,rishig/zulip,vaidap/zulip,jrowan/zulip,jrowan/zulip,dhcrzf/zulip,Galexrt/zulip,zulip/zulip,mahim97/zulip,eeshangarg/zulip,rishig/zulip,tommyip/zulip