flickr 7.x-1.5

Rewrite mainly to:

• offer new features like to insert responsive slideshows in blocks and node body
• improve the caching mechanism for Flickr Blocks
• eliminate duplicate code to ease porting to D8 later on.

NOTE:
There are three blocks that show the Flickr photos of a corresponding user 'dynamically' and appear on user profile pages and on posts written by the user (before only on the user profile). To avoid that, change the block settings to exclude 'node/*' pages or show them only on 'user/*' pages. See https://drupal.org/node/2171249.

Changes since 7.x-1.4:

• #283338 by davebv: Floats in Flickr Filter class or style tags restored to work.
• Added explanation to README on when and how captions are suppressed.
• Added useful links to the Flickr configuration form.
• Extended README's. Flickr Block: using path_alias in links to photosets, improve conditions of empty data fater install, set media type to 'photos' for all blocks. Flickr Field: remove non-available formats. Flickr config: add a link to apply for an API key under the corresponding field.
• Implemented Code Sniffer suggestions (running drush dcs).
• Removing forgotten variables on uninstall of main module.
• #2229255 by mholve: Avoid that the slideshow size can be used for single images (that won't work).
• #2243905 by lolandese: Added the new README.txt of Flickr Sets to the 'Help'.
• #2243905 by lolandese: Updated README's (one new for submodule Flickr Sets).
• Added a note on the visibility of user blocks in the relevant block configuration to avoid confusion.
• Setting default refresh for other blocks to 30 to avoid it running together with random blocks.
• Setting default media type in blocks to 'photos' only instead of 'all' that includes also videos.
• #925262 by cjwood555: More fine-grained classes to target title and metadata with css.
• #2238477 by lolandese: Use path alias instead of nsid in links to Flickr pages if it exists.
• Link to idgettr service in the filter tips and correction of code comment in previous commit.
• #2227019 by lolandese: Centralize multiple identical code snippets in one function (flickr_get_username).
• #2227019 by lolandese: Make use of flickr.api.inc instead of direct flickr requests.
• #1128612 by jdelaune: Using switch instead of elseif statements.
• #2023103 by dakku: Respect media types for all blocks and added number out of total option.
• #2232631 by hejeva: Flickr Field photoset title and description fix.
• #2235455 by lolandese: Slideshows for Flickr Blocks and user photostream slideshows in Flickr Filter.
• #2235019 by lolandese: Extend the profile blocks to node pages for which the user is the author.
• #2234779 by lolandese: Block titles that contain dynamic data that links to relevant Flickr pages.
• #2227019 by lolandese: Removed duplicate code.
• #2021575 by spinsheet: Improved caption triggering mecchanism.
• #2227669 by tomogden: Use the cache API for Flickr blocks (loads them quicker).
• #2229255 by mholve: Flickr Filter group pool slideshow.
• #2227019 by lolandese: Reduce code lines.