[MERGE #133] Refactored netci.groovy (closes #50); simplified trigger regexes (fixes #119).
[MERGE #133] Refactored netci.groovy (closes #50); simplified trigger regexes (fixes #119).

Merge pull request #133 from dilijev:jenkins
Fixes #119.
Simplified trigger regexes; refactored dailyRegex to script-wide constant.

Closes #50.
Refactored style checks into a helper closure and call it once to produce each config.
Refactored build task generation to minimize duplication of code.

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