This replaces the default source directories (src/main/java, etc)
with our own, instead of just appending ours to the list.

Use @Nonnull

Change-Id: I3b054eb2144f51bc0b5935ee24525616dc042a4e
Reviewed-on: http://gerrit.dmdirc.com/4047
Reviewed-by: Chris Smith <chris@dmdirc.com>
Automatic-Compile: DMDirc Build Manager

Change-Id: Iea36563c1cd6119e3da0b2d200ceb95d09092fd8
Reviewed-on: http://gerrit.dmdirc.com/4005
Reviewed-by: Greg Holmes <greg@dmdirc.com>
Automatic-Compile: DMDirc Build Manager

Tidy up .gitignore.

Change-Id: Iaab43f6e475d834644a5c18a983a24679874df52
Reviewed-on: http://gerrit.dmdirc.com/3913
Reviewed-by: Greg Holmes <greg@dmdirc.com>
Automatic-Compile: DMDirc Build Manager

Change-Id: I579afbde086d5761fe3743b23f4655cb4ea5b8df
Reviewed-on: http://gerrit.dmdirc.com/3909
Reviewed-by: Greg Holmes <greg@dmdirc.com>
Automatic-Compile: DMDirc Build Manager