add fahnerit_web\TextStorage, initial commit

C. Fahner <info@fahnerit.com>
rename libs folder to lib in fahnerit_web extension (fixes error)

C. Fahner <info@fahnerit.com>
add PageService

C. Fahner <info@fahnerit.com>
fix createPage to longer also create a new snapshot when the page already exists

C. Fahner <info@fahnerit.com>
fix error handler to include error_reporting level

C. Fahner <info@fahnerit.com>
add correct use statements

C. Fahner <info@fahnerit.com>
add ApiCall fahnerit_web/text_retrieve

C. Fahner <info@fahnerit.com>
update docs for fahnerit_web/text_retrieve

C. Fahner <info@fahnerit.com>
add page creation system
add PageService->createPage
add ApiCall fahnerit_web/page_create
add PageSnapshot class
add PageService->getSnapshot and PageService->getLatestSnapshot

C. Fahner <info@fahnerit.com>