(bugfix) Don't pass -pageage option through gen.handleArg(), CI

- "-pageage" may be recognized by gen.handleArg but it is a local
  option only. Calling gen.handleArg() in else clause will solve it
- Show help doc if no generator is given like with -help option
- keep lines < 80 chars
- replace page.get() with more core-like page.text

Change-Id: I3eb84ef9993cfa7c33aa18a3be7576096d5fc7ee
Merge "(bugfix) Don't pass -pageage option through gen.handleArg(), CI"