replaced block-content class with block-page to make clearer this is a block on the page,updated css to match, rewrote system prompt in store_helper.py to generate more targeted image prompts, adjuste template_update.html wit h newer prompting

Fixed reset, blockContainerPage needed to be reinitialized, renamed image textareas ids to sdprompt- in template

added addPage and removePage function, eventlistener and buttons, remove checks for blocks on page and gives an error popup

add css for image-textarea and generate-image-button to set display:none when in page-container, updated block_builder.py and template_update.html to include image-textarea

added update_template.html which is same architecture as storeUI.html page-container, so testing will be more accurate. Updated extractBlocks function to target block-items