Clean up Maven build (#662)

* remove invalid tycho resolver config (not valid since many versions)
* fix PMD plugin configuration (config attribute was renamed in 3.18)
* remove duplicate versions already managed in pluginManagement section
* fix indentation
* move all not yet configured versions into pluginManagement of the
parent module to avoid further duplication
* consume the target platform as file, not as maven artifact (this
simplifies building a single module A LOT)
* remove invalid tycho-source-plugin configuration
* disable tycho consumer POM generation (not needed here, and avoids a
warning in each module)
* remove prerequisites. that's for maven plugins only, and this POM
already contains the better suited similar maven enforcer rule
* enforce UTF-8 for javadoc generation (the build fails on Windows
otherwise, trying to read some Japanese? characters with the Windows
default encoding)

Author: Bananeweizen

terminal/plugins/org.eclipse.tm.terminal.view.core/META-INF/MANIFEST.MF

@@ -2,7 +2,7 @@ Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
 Bundle-Name: %pluginName
 Bundle-SymbolicName: org.eclipse.tm.terminal.view.core;singleton:=true
-Bundle-Version: 4.10.100.qualifier
+Bundle-Version: 4.10.200.qualifier
 Bundle-Activator: org.eclipse.tm.terminal.view.core.activator.CoreBundleActivator
 Bundle-Vendor: %providerName
 Require-Bundle: org.eclipse.core.expressions;bundle-version="3.4.400",