MIFOSX-1758 Make the dist ZIP include the community-app in apps/ via Git submodule

Root build.sh, for both back-end and front-end
Added -Penv=dev to incl. MariaDBj4
Include apps/**/* in ZIP, fixed UI URL in launcher, some doc
Set submodule Git rev to one that actually exists on remote
Don't use 'git submodule update --remote' but foreach ..
build-cloudbees.sh makes npm available
Better logging, and trying dev and prod dist UI

build.sh

@@ -0,0 +1,19 @@
+#!/bin/bash
+
+# Exit the script if any command returns a non-true return value (http://www.davidpashley.com/articles/writing-robust-shell-scripts/)
+set -e
+
+git --version
+# TODO UNCOMMENT THIS once https://github.com/openMF/mifosx/pull/1291 is merged!
+# git pull
+# This does NOT get the most recent revision from the submodule repository.
+# Instead, it only gets the revision of the submodule that is recorded in the revision of the main repository.
+## NOT git submodule update --remote
+# The following is very important, because even if the main (API) repo is latest,
+# the sub-module initially will be a fixed old rev. and only this grabs real latest:
+git submodule foreach 'git checkout develop && git pull --ff-only origin develop'
+
+cd apps/community-app
+./build.sh
+cd ../../mifosng-provider/
+./gradlew -Penv=dev clean dist