Dev: update TODO
Low: cibconfig: make sure that the vim syntax line doesn't creep into the configuration as a comment
Dev: test: make sure that pre and post filters run in the same directory as the testcase
Low: cibconfig: fix test for operation existence in the monitor command
Dev: test: add test profiling
Medium: cibconfig: improve performace when testing if resources are running

Put all CIB/resource queries into a class (RscState). We can then
use cibadmin once to fetch the CIB (cib queries are expensive!).
It also makes the code a bit better organized.
Dev: remove obsolete code

Moving to lxml makes the is_element test obsolete. Some unused
functions dropped too.
Low: cibconfig: fix resource sets reference updates
Dev: add README.dev
Dev: update README.dev