JAL-3225 Removed dependency on command line pandoc to convert .md files to .html. Now all files in doc/*.md will get converted to doc/*.html using flexmark within gradle process.
JAL-3225 Using Gradle Git-Version plugin to set gitHash and gitBranch
Using Gradle Git-Version instead of exec to run git directly allows
buildship to successfully import the project into eclipse without a
command line git installed. Essential for development within Eclipse in
Windows without having to install either gradle or git as command line
tools.