New CodeMirror, Better themeability

This version contains:

• Updates on CodeMirror (syntax highlighting in plaintext editor)
• Request data made available to Velocity engine, so that themes can access request headers, parameters, etc allowing more customization

Maven:

<dependency>
            <groupId>com.github.tcnh</groupId>
            <artifactId>fitnesse</artifactId>
            <version>20181214</version>
</dependency>

20181025 - New version of codemirror, wiki highlighting in tables

• New codeMirror version
• Highlighting of variables inside tables in the text-editor
• Disabled slim table row coloring logic based on first cell

<dependency>
  <groupId>com.github.tcnh</groupId>
  <artifactId>fitnesse</artifactId>
  <version>20181025</version>
</dependency>

Bugfix release

Fixes a bug where expression evaluation resulted in a NPE on the slim server when a variable had a null value.

Fork release containing velocity fix and Slim symbols

Release containing:

• unclebob#1123
• unclebob#1127

<dependency>
  <groupId>com.github.tcnh</groupId>
  <artifactId>fitnesse</artifactId>
  <version>20180319</version>
</dependency>