Update project template for CUBA 7.2

[alexbudarov]

Environment

• CLI version: 2.1.2

Description of the bug or enhancement

cuba-cli generates projects for CUBA 7.2 with obsolete template:

• old gradle wrapper version: Use Gradle 5.4.1 for projects based on CUBA 7.2 #184

• old build.gradle (changes for app home and others)

• generates JNDI-based data source instead of app.properties-based

• old version of PostgreSQL JDBC driver if you select Postgres as database

• old way how to generate dependency for Oracle (now we use Maven dependency)