removed compareTo from UiBlockInfo since its bad practice to define it without equals and hash.  Inspecting the code, it wasnt needed so removed
fixed issues caught by findbugs on WebInterfaceBrowseServlet
fixed unneeded code that compiler checks already.  Fixed array so it cant go past array
added exponential backoff for master client
docs
max retry is set back to 1 second
updated based off feedback from checkstyles
Merge pull request #480 from dcapwell/findbugsfix

Findbugsfix
updated docs and format based off feedback
Merge pull request #401 from dcapwell/clientExponentialBackoff

Client exponential backoff
tweak retry code
equals requires hashCode. No usage of equals could be found so removed from Pair.
UiFileInfo defined compareTo without equals and hashCode.  Since this is needed, switched over to Comparator
null checks ignored in finally block with nullable types.  added transient flag to master info
added transient flag to all servlet fields