Fixes#2008
* Viewport metatag updated
* Fix to Time Conductor for Safari
* Remove data visualization element in TC
* Hide TC ticks when on mobile
* Add touch functionality to mct-drag
* Reduced size of image thumbnails; Changed min-heights of image and thumbnail
holders for .mobile.phone
* remove create dialog from mobile
#164https://github.jpl.nasa.gov/MissionControl/vista/issues/299
App logo and bg files renamed;
Added openmct.scss to hold openmct-specific styles;
Renamed _startup.scss to startup-base.scss
which now renders its own .css file;
Still to-do: apply to WARP including needed
mods to its About dialog screen;