Unittests fuer _page und _Page.
Link.php: add checkEmptyValue(), checkValue() - code becomes cleaner.
Report.php: diverse Stellen empty() entfernt und durch isset() && ==='' ersetzt. empty() nimmt auch '0' als leeren Wert.

Link.php: fixed bug that '0' as parameter for a token was equal to 'take default'.
Report.php: fixed two bugs with 'uninitialized variable'
Sip.php: index.php replaced by a constant.

Link.php: code refactored. New implementation should be position independent for the token string. Also some logic changed to be much cleaner. New: NAME_QUESTION_* (not implemented now), FINAL_*, $tokenMapping[], $tokenGiven[]. Removed: varsDefault - directly set in initVars().

PHP Unit Tests: LinktTest.php, ReportTest.phh - more tests

ReportTest.php: Link, render mode, mailto

UsersManual/index.rst: cleanup of _link, _pagex, _PageX description.
Link.php, Report.php: Hard coded token names replaced by constants. Name of token 'h' (HASH) changed to 's' (SIP).
Report.php: Removed code for column '_F'.

Support.php: rewrote appendTypo3ParameterToArray() to use Typo3 Store instead of _GET Parameter. Moved randomAlphaNum() to Support.
Link.php: rewrote handling of ToolTip. Renamed doHtmlUrl() to doAnchor().
Utils.php: moved randomAlphaNum() to Support.
Store.php: rewrote fillStoreClient() to be more compatible with phpUnit-test environment. Removed randomAlphaNum() - duplicate in Support.
AnbstractBuildForm.php: rewrote deriveNewRecordUrlFromExistingSip() to use generic Support::appendTypo3ParameterToArray()
Coding.md: Notes for debuggging.

Link.php: Button 'edit/new/show/delete/info' do not assign class internal/external.
Store.php, Constants.php: TYPO3_PAGE_LANGUAGE implemented. TYPO3_PAGE_ID, TYPO3_PAGE_TYPE renamed.

Link.php: Whole class refactored. Errors now reported via UserReportExtension. Access to array 'vars[]' now unified via constants. Number of build*() Functions reduced. Handling of default values simplified.

Link.php: refactoring for implementing unittests

Link.php, Report.php: starting with cleaning up class Link. Constructor purified, enhanced error reporting might be later implemented again.
AbstractBuildForm.php, BuildFormBootsrrap.php, BuildFormTable.php: renamed getAttribute() to doAttribute()
LinkTest.php: starting creation.