* Add ability to set custom welcome message for chat server

* Add chat room monitor tool
* Improvements for the CLI chat functionality

* fix browse window from trust and chat views

* scroll the chat field when new messages arrive
* new message notifications on Windows and Mac
* CLI: ability to sort files and results
* CLI: chat server console

* announce to rooms when reconnecting to chat

* add browse ability from chat window
* make the chat button connect/disconnect.

* fix connecting to multiple chat servers

* add right-click menu to trusted table
* enable sharing of directories from "Share" button

Chat functionality

Release 0.6.2 for preview functionality

Fix unsharing files with comments

Wrap up the 0.5 series:

* make signed queries mandatory
* sign more query metadata to prevent replay attacks
* fixes for the file grouping UI
* add option to open containing folder of a shared file

Release 0.5.10

* Add new search UI where results are grouped by file
* Add ability to store reasons for trusting/distrusting someone

fix a bug in indexing comments where the last word in each line was n…

…ot indexed

add comments to certificates, fix bug where multiple certificates for the same file would get lost after restart
add right-click option to uploads table to show the uploaded file in the library
add right-click option to show shared file details like search hits, downloaders and certificates