Update help links to point to new wiki.  Fixes #716.
Fix template escape processing. Fixes #752.
Remove update JARs
Fix CollationKey creation - fixes #753
Adding a TODO
Update Apache HTTP client JARs to 4.2.5
Specify target Java version for bundled extensions - addresses part
of #754
Build extensions before running tests - another piece of #754
Merge pull request #1 from OpenRefine/master

pull request test