Parser was extended to be able to export current method descriptors in
new format.
Merge branch 'master' into dev
added exceptions classes, new local git db class
GitHubDB was switched to files.
Merge branch 'dev' of github.com:msneddon/narrative_method_store into dev
File operations were moved from GitHubDB to LocalGitDB.
Checker was added monitoring remote changes in git repo once a minute.
updates to server and config variables
added CategoriesIndex data structure
Cache for method brief info and specs is now added.
Forgot to add lib into build.xml last time.
Image servlet is added. Now RPC calls should be done for URL like
http://server:port/rpc and images will be accessible by URL like
http://server:port/img?method_id=<method_id>&image_name=<image_name> .