Check in changes for issue 149
Add existing files to content.data in the backup dirs during initialization
Check in changes for issue 149
Add files  during initialization and mark them as Stable state
Initialize function was modified - gets dynamic_content from outside the class
Added on  ln 41 - 51
Read initial content data from previous system run
Update dynamic_content with content data
Initialize filoe_monitoring with existing data
Roll back changes made.
Merge pull request #169 from bbfsdev/Issue149

Issue149 - Merging Alexey fix.
Small syntactic fixes.
1) Alexey fix. 2) Change content data usage from emutable to mutable database. 3) Fix minor issues.

Merge remote-tracking branch 'origin/master' into release_1_1_0

Conflicts:
	lib/content_server/backup_server.rb
	lib/content_server/content_server.rb
	lib/content_server/queue_indexer.rb
	lib/file_monitoring/monitor_path.rb