remove the vaadin-client-compiler jar from the generated war

this jar is definetly only used to compile widgetsets
beside .zip also ignore the .zip.sha1 files generate for local deploys
use a variable for the used Vaadin version in BuildConfig
Merge pull request #20 from christoph-frick/ignore-generated-maven-files

beside .zip also ignore the .zip.sha1 files generate for local deploys
Merge pull request #21 from christoph-frick/vaadin-version-only-once-in-buildconfig

use a variable for the used Vaadin version in BuildConfig
Merge pull request #19 from christoph-frick/remove-vaadin-client-compiler-jar-from-war

remove the vaadin-client-compiler jar from the generated war
fixed async-supported: "true" instead of "1"
Added support for custom init-param in VaadinConfig
Added support for custom init-param in VaadinConfig, with check for null.
Merge pull request #24 from martinellimarco/master

Added support for custom init-param in VaadinConfig
7.1.10 released
Init method removed from the servlet service.
Init method removed from the servlet service.
Init method removed from the servlet service.
issue checked... fixed
GPVAADIN-21 fixed
Updated to 7.1.11
Merge pull request #26 from antoniocaiazzo/master

async-supported: "true" instead of "1"
Merge remote-tracking branch 'upstream/master'

Conflicts:
	grails-vaadin7-plugin/grails-app/conf/BuildConfig.groovy
updated to grails 2.3.7