Minor maintenance release

What's Changed

• Re #2263 "send test notification" from watch edit should respect global settings and tag/group settings by @dgtlmoon in #2289
• Tweaks to tag/groups page by @dgtlmoon in #2290
• Remove unique check for URLs entered on the "quick watch add" form #2286 by @dgtlmoon in #2292
• avoid deprecated message - packing our own strtobool by @dgtlmoon in #2291
• UI - Re #2307 - Adding UI notice if watch has group options set by @dgtlmoon in #2311

Full Changelog: 0.45.17...0.45.18