Introduce Checkstyle to TouchRAM development

[Matthias Schoettle]

Introduce Checkstyle to all TouchRAM development projects for consistent coding style across the team.

Also, this requires a Java code formatter configuration that complies with the checkstyle requirements.

A description on how to set it up is required in the Wiki.

[Matthias Schoettle]

References issue #82: Added commons project to share settings, configurations and code across projects. This project has to stay independent of other projects, dependencies to plugins of Eclipse or third-party libraries are acceptable.

→ <<cset c33906cf5307>>

[Matthias Schoettle]

References issue #82: Added first version of Checkstyle and Java code formatter configuration.

→ <<cset f1a692a67af6>>

[Matthias Schoettle]

References issue #82: Removed custom formatter for projects and save actions.

→ <<cset e635696ae1a9>>

[Matthias Schoettle]

References issue #82: Activated Checkstyle for all projects.

→ <<cset d8e51f8d30fa>>

[Matthias Schoettle]

Wiki updated as well: https://bitbucket.org/mcgillram/touchram/issue/82/introduce-checkstyle-to-touchram

[Matthias Schoettle]

References issue #82: Improved checkstyle:

• allowing more lines for inner classes
• added rules to be able to suppress checkstyle rules in certain cases: "CHECKSTYLE:IGNORE <rulename>: <reason/explanation>." for the following line or "CHECKSTYLE:IGNORE <rulename? FOR <numberOfLines> LINES: <reason/explanation>."

→ <<cset 11678476979f>>

[Matthias Schoettle]

References issue #82: Not considering 2 as a magic number.

→ <<cset 99161e106cc9>>