Merge pull request #15 from rinmalavi/master

Prompt to delete a custom temporary directory if it contains any files.
Exit early after showing help
Scala server multi-tenancy support.

Allow multiple databases with same model.
Sync with latest Java client library.

Due to library url change fix maven path.
Specialized Android target.
PHP UI extensions hack

Temp workaround, should be changed in compiler
Merge pull request #16 from nutrija/master

PHP UI extensions hack
Target case sensitivity fix.

Guard against php and PHP as targets.
Android should download android.zip from server

It contains Android dependency so it's much larger.
Download only runtime dependencies

Better mvn success detection.