fix margin on bandwidth configuration page, fix alignment on bandwidth configuration page, align informational text to language start

Overhaul CSS n New Install Wizard in order to make it less dependent on absolute positioning. Remove confusing M-Lab measurement table since the meaningful results are already populated in the configuration table. Adjust postioning of some elements on the bandwidth config pages. remove the old images from both themes.

for efficient lookup and to prevent display of dup prefixes

Don't overwrite an existing family keystore file
Don't allow starting a new family with an existing family keystore file
Don't add family to RI until we have restarted and have a keystore file
Don't fail a netdb store for no family sig
Don't ever fail our own netdb store for family errors, to avoid rekey/restart

Return a result code from verify()
Load all known certs at startup rather than continually reloading them
Only give full verified status to known keys
Enforce signatures in netdb store when key is available
Show family verification status on /netdb
Export our cert to disk if missing
Add stormycloud family cert
Bypass /24 Sybil penalty

remove old Java 7 check

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)

otherwise relative to plugin name, as before