Update missed files for 2017

Add script to easily checkout all the repos to a given point

Include client bundles

Update gitignore

Add an IDEA code formatting file.

Update gradle to 3.1.

Include the API project.

Update gradle.

Remove shared IDEA config, update README.

IDEA can import the project by itself now, and works a lot better.
After importing only one manual step is required (to enable
annotation processing).

Change project names after parser group change.

DMDirc/Parser#23

- Fix link to client repo (it's DMDirc/DMDirc not DMDirc/client)
- Add shiny screenshot
- Add information on actually installing and running

Update gradle

Project file updates.

Update gradle version.

I'd set the wrapper to use 2.11 but never actually ran
the task, apparently.

Update gradle to 2.11.

This fixes issues downloading from dmdirc.com over SSL, as
previous versions of gradle didn't support SNI.

Remove some stuff, change some versions etc.

Gradle and circle updates

Add a new task that actually downloads dependencies by
forcing them to be resolved. Make circle use that.

This makes incremental build time ~2.5s on my machine.

iml file updates

- Add ui_web2
- Various changes done by a new version of IDEA
- Add note in README about adding new projects