remove old Java 7 check

copied from i2prouter script

set table-width to fixed on console dark theme, and run the auto-indenter on the console light theme to fix it's inconsistent tabs. Merge the chrome-overrides rules on the console light theme CSS. Changes to light theme are entirely cosmetic, except that they improve the reliability of my CSS linter.

set .wizardimg css to display: none on the dark theme so the light-theme background images don't show up. Normalize the wildly inconsistent tabs tabs in console.css

Revise ShellService.name to match ShellService directory if the directory includes -SystemVersion.getOS or -SystemVersion.getArch

Check executable status of shellservice plugins in start. If the ShellService plugin name doesn't correspond to a directory, check plugin name+-$OS-$ARCH and name+$OS.

Adds the ability to use `$OS`  and `$ARCH`  variables in clients.config and plugins.config(updateURL.* only)

WIP - not hooked in, untested - target 1.8.0 / 0.9.54
Requires significant changes to TrackerClient
Adapted from mtn branch i2p.i2p.zzz.udpsnark (2014)
Ref: Proposal 160

Turn jump button-links back into regular-looking hyperlinks when resolution indicates we are not on a mobile device

otherwise relative to plugin name, as before

Linkify start/stop webapp on password page