Move more items to utils and fix clasp open

[campionfellin]

Clasp open was trying to open an object, rather than the scriptID
Moved over manifestExists, saveProjectId, checkIfOnline, and getAPIFileType

Signed-off-by: campionfellin campionfellin@gmail.com

Works on #133

• npm run test succeeds.
• npm run lint succeeds.
• Appropriate changes to README are included in PR.

[coveralls]

Pull Request Test Coverage Report for Build 134

• 0 of 0 (NaN%) changed or added relevant lines in 0 files are covered.
• 328 unchanged lines in 2 files lost coverage.
• Overall coverage increased (+0.1%) to 11.47%

---

Files with Coverage Reduction	New Missed Lines	%
src/utils.js	72	14.68%
index.js	256	6.71%

Totals
Change from base Build 133:	0.1%
Covered Lines:	122
Relevant Lines:	793

---

💛 - Coveralls

[grant]

Feel free to break up utils, it's getting a bit crazy:

import { DOT, PROJECT_NAME, PROJECT_MANIFEST_BASENAME, ClaspSettings,
    ProjectSettings, DOTFILE, spinner, logError, ERROR, getScriptURL,
    getProjectSettings, getFileType, getAPIFileType, checkIfOnline,
    saveProjectId, manifestExists } from './src/utils.js';

See #134 (comment)

Then again, I think this will change when other files are broken up.