Enabled multiple Twitter handle checking, more updates

-Added command-line option for multiple Twitter checks
--Only works if Twitter checking is enabled
--Program will always check @Official_PAX Twitter if Twitter checking
-Removed TicketChecker class instance regulating
--For checking multiple Twitter accounts
-Made Instructions and Extra tabs in Setup load from HTML files
-Made Notification window have More Info button
--Only shows if link is added to notification
Added Twitter Streaming, updated lots

-Added Twitter streaming
--Filters to currently specified user handles
--Will currently find all Tweets with mentions, not just tweets from twitter users
---Will fix soon
-Made Ticketchecker use a Cached Thread Pool
--Expands based on Threads needed rather than flat value
-Made TicketChecker reset link found in Check subclass if link has already been opened
-Removed ErrorDisplay synchronization
--Having trouble displaying?
-Made NotificationWindow actually display More Info button
-Changed text sent language
--Says "update found" instead of "tickets found"
Made Twitter checking not trigger on stream and base API check

-Made stream add link found to TicketChecker list
-Made TwitterChecker methods synchronized
-Updated Tickets.java GUI text to "link found" instead of "tickets found"
Removed CheckTwitter use, moved some things around

-Deprecated CheckTwitter.java
-Made TwitterReader only create one Stream instance
-Undeprecated Checker.java
-Moved parseLink from TwitterReader to Browser
-Made Stream ignore tweet if it doesn't contain keywords in TwitterReader.java
Cleaning up code, small housekeeping

-Moved Twitter stream code to new class
--Still called through TwitterReader
-Moved commandLine boolean to PAXChecker.java (from ErrorDisplay)
-Made Startup initialization code more in line with other GUI code
-Made PAXChecker.main() determine commandLine immediately, show Startup ASAP
Reordered some program initialization, updated GUIs

-Made TwitterReader.setKeys() method output if keys not set correctly
-Made runTwitterStream() check if twitter is initialized before starting stream
-Moved TwitterStreamer to paxchecker.check
-Made GUIs setVisible on EDT
-Added checkboxes for Load Notifications, Load Patch Notes, Save Twitter Keys
--All disabled at the moment
--Twitter keys will be saved in their encrypted format
-Made program load all GUIs (expect Tickets) on program start
--Longer initial load times, faster display times
-Made program show [Only Scanning Twitter] if not checking Paxsite or Showclix
-Made program not automatically restart in CLI mode
-Changed version to 2.0.0 R5