Fixed project.add_docs
Moved add new doc form sourceid_index to sourcedb_index
Deleted link to sourceid_index
Revised project.add_docs
revision for the case when 'encoding=ascii' is specified.
Merge branch 'working' into development

Conflicts:
	app/models/project.rb
rewrite_ascii spec removed.
ruby-dictionary gem added.
SequenceAlignment class is newly replaced with TextAlignment.
get_docspec is revised to give an array of div_ids when not specified.
fix for posting annotations.
automatic division and alignment of PMC documents works fine.
The array of unicode mappings is added to the TextAlignment module.
text selection revived.