browser: don't attempt to write static build while testing

Deploy static build after test run and serialize it into the flow
so as not to put stress on disks. May help with file copy problems.
javadocs
chore(browser/readme): incorporate content previously in main readme
browser: never do not disable log in button

Rather than fight with Firefox and its lack of events, leave the login
button enabled even if the password and username are not of minimum
length.
Suppress too-verbose logging
Update to Java EA-3 Client
browser: search tips edits

include examples for operators
formatting tweaks to keep examples on one line
extra space before bracketed info
READMEs
node: readme
Adding initial CONTRIBUTING.md file, with reference to the CLA
readme: updates for additional information
readme: simplify getting started bullets
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