Cachify CSS while compressing it. Fixes Issue 620

Add the groundwork for browser specific "Enable Cookies" URLs.

* Start with generic Firefox and iOS

issue #1167
issue #1302

Reusing staticPath in compress worker and making prefix configurable, removing DRY violation per llyod

Fix cookiesEnabled being possible to call it's onComplete callback twice if onComplete throws an exception the first time.  closes #1339 - related to issue #1323

Fix cookiesEnabled being possible to call it's onComplete callback twice if onComplete throws an exception the first time.

issue #1339

use etagify for content-based hashes in ETag headers - issue #1331

update cache header tests because etagify lazy calculates content hashes for etag headers, see comment in commit contents

add a ping wsapi that's registered on all daemons and does a light weight test of database health - closes #1324

remove obsolete cleanup_compress.sh script - now scripts/compress doesn't leave artifacts all over the place

(aws deploy) another bug in deployer support for multiple keys - call copyNext() to start key copying

revert accidental inclusion of 'AOK' in console output reporting web requests during dev - issue #1255

close #1133
close #1261
close #1262
close #1272
close #1274
close #1275
close #1286
close #1300
close #1304
close #1305
close #1306
close #1309
close #1310
close #1311
close #1313
close #1314
close #1315
close #1316

issue #1316

issue #1314.

issue #1315

* Fix "We just sent an email to that address" tooltip being partially cut off on mobiel. issue #1309
* Fix "wait, delay, and error" screens not being shown on mobile at appropriate times. issue #1306

* Remove top box-shadow on input elements on iOS devices. issue #1313
* Make sure "Cancel" button is in correct place when user has to enter their password after picking an email address. issue #1310
* Make disabled input elements readable on iOS. issue #1311

* Change the layout so that the entire form area gets the scroll bar for languages that use a lot of text or if the user has a lot of email addresses.
* Change the way the privacy policy and buttons are rendered so JS is not needed to set the width of the privacy policy.
* Put the TOS on its own line.
* Put "Always sign in using this email" on its own line
* Change the order of the "Forgot your password?" button and "password" label so that Germanic languages render the entire thing on one line.
* Remove the "Sign in using" header text.

issue #1300
issue #1286
issue #1275
issue #1274
issue #1272
issue #1262
issue #1261